The Atari Resource

How To Start Your Own Bbs Free Software for Atari

Sat, 02 Apr 2011 19:15:04 GMT

Interview with Jeff Bell of the Itsy Bitsy Bulletin Board Itsy-Bitsy isn't a business or institutional system it's an electronic bulletin board that one ATARI user Jeff Bell operates from his home. We interviewed Jeff to find out why he began his own BBS, how he did it, and what you need to know to start your own electronic bulletin board. I named my BBS 'Itsy Bitsy' because I wanted people to know that it's not a big system with main frames or 30 MB hard drives. It started as a one-drive...

The Video Canvas AtariGraphics

Sat, 02 Apr 2011 17:57:40 GMT

This chapter is an introduction to ATARI graphics. It is our first exposure to the video canvas. In this chapter you will learn to The word READY should appear in the upper left corner of the screen with the cursor little white square below it. Refer to the ATARI owner's manual if you need help.

The Bottom Line AtariDevelopment

Sat, 02 Apr 2011 12:08:14 GMT

Bill Rehbock, Director of Technical Services We are on a roll There have been many exciting developments in the last two months. Networking is a reality, the MegaSTE has passed FCC Class B, and we have been recognized as a viable platform for mid to high-end digital typography. In this issue, you will find details on the _FLK and _NET cookies. I encourage everyone to support file sharing and record locking as soon as possible. We designed the protocol to be as industry-standard as possible to...

An Alpha Systems Product Atari Software Protection Techniques

Mon, 28 Mar 2011 01:06:26 GMT

Atari, Atari 400 Computer, Atari 410 Program Recorder, Atari 800 Computer, Atari 810 Disk Drive are all trademarks of Atari, Inc. Apple is a trademark of Apple, Inc. IBM-PC is a trademark of IBM, Inc. c Copyright 1983 by Alpha Systems, Stow, Ohio, 44224. All rights reserved. No part of this book may be reproduced by any means without permission in writing from Alpha Systems. Printed in the United States of America 10 9876543 The need for software authors to protect their property from theft is...

Atari Assembly Language Programmers Guide Atari Assembly Language

Sat, 26 Mar 2011 19:13:16 GMT

Weber Systems, Inc. Chesterland, Ohio The authors have exercised due care in the preparation of this book and the programs contained in it. The authors and the publisher make no warranties either express or implied with regard to the information and programs contained in this book. In no event shall the authors or publisher be liable for incidental or consequential damages arising out of the furnishing, performance, or use of this book and or its programs. Atari 400 , Atari 800 . Atari 800XL ,...

DOCUMENT NUMBER Qfz Atari CGIA Chipset

Sat, 26 Mar 2011 18:36:51 GMT

The CGIA uses direct memory access to accomplish several different functions. The primary function is to fetch display instructions and playfield graphics data from memory for display. The secondary function is to fetch player missile graphics data for display. All aspects of DMA are controlled by the DMA control register. The DMA control register can enable disable display instruction fetches, as well as, playfield graphics data fetches, select one of the three playfield display widths, enable...

Vertical Blank Interrupts Atari Arcade Game Design

Wed, 23 Mar 2011 18:49:24 GMT

The Atari computers use the Vertical Blank Interrupt for many housekeeping chores. When the Atari is first powered up under normal conditions, the Vertical Blank Interrupt is enabled. A special list of vectors is placed in page two of memory. The operating system places the list of vectors in page two because these are RAM locations and the user can change their contents to point to his own interrupt service routine. System Reset is the only interrupt that cannot be routed through page two. The...

Memory Tester Atari Programming Tips and Tricks

Mon, 21 Mar 2011 16:58:44 GMT

Most everybody can remember numbers. At least short numbers with few digits. But how long a number can you recall in a flash The computer will briefly display a number. It then will remove the number from your view and ask you to repeat what it was. If you missthree times, thecomputer will tell you to FORGET IT, give you your score and end the game. Then it will start over. On the other hand, if you recall correctly, the computer will say so and then give you a new number. The new number will...

Then Gosub AtariBasic

Mon, 21 Mar 2011 13:14:31 GMT

RETURN Here is an example of LOWTOCAP.LST Set WORD John Paul Jones. GOSUB 20190 returns WORD JOHN PAUL JONES. Inverting the Characters in a String The second special case is converting all the inverted characters in a string to non-inverted characters. INVERT.LST is a subroutine that will convert all normal characters into inverted ones or vice versa. The string to be inverted must be stored in WORD , and the flag variable INVERT must be set to 0,1 or -1. If INVERT 0, then only inverse...

List of Boxes Atari Assembly Language

Mon, 21 Mar 2011 10:32:07 GMT

4 Program - Display List Dump _ 79 5 Program - Position Concepts _ 86 6 Program - Modified Graphics 8 _ 87 7A Program - Mode 4 Display List _ 92 7B Program - Antic Mode 4 with Rocket _ 93 8 Program - Antic Mode 14 Display List _ 96 10 Program - POKEing in Colors _103 11 Program - Two Methods of Displaying _105 13 Utility - BASIC Character Generator _110 14 Program - Redefined Character _113 15 Utility - Multicolored Character Generator ___116 16 Program - Light Bulb Player _129 18 Program -...

Ikbd Matrix Ikbd Matrix Ikbd Matrix Ikbd Matrix Ikbd Mcu 1 Engineering Hardware Specification of the Atari ST

Sun, 20 Mar 2011 22:17:05 GMT

Down Switch Left Switch Right Switch Fire Button Power ------- The ST video display interface supports low resolution 320 x 200 or 640 x 200 television receivers and composite monitors, low resolution 320 x 200 or 640 x 200 RGB monitors, and medium resolution 640 x 400 monochrome monitors. Both NTSC and PAL color encoding standards are available in two separate configurations of the video interface hardware. For United States television receivers, the modulated RF display signal is provided on...

Table of Contents AdSpeedST Advanced 68000 Accelerator

Sun, 20 Mar 2011 20:27:05 GMT

How It AdSpeed ST 520ST, 1040ST, and Mega Removing the Installing AdSpeed The High Speed ROM Replacing the ROM Optional Speed The 8MHZ.PRG and ADSPEED. SHOW.PRG and Quick ST Moniterm Viking Large Screen Monitor Compatibility 13 Programming AdSCSI ST Host AdSCSI Plus AdSCSI AdSCSI Micro FA-ST Hard Drive FA ST Hard Drive FA ST Tape Cleanup Personal

Ad Speed ST Configuration AdSpeedST Advanced 68000 Accelerator

Sun, 20 Mar 2011 20:26:49 GMT

AdSpeed ST has two jumpers that configure aspects of its operation. These are the pairs of posts A amp B and C amp D at the end of the board. To change the settings of these jumpers, move the supplied jumper plug so that it covers both posts. A amp B determine the starting speed. If they are not connected, AdSpeed ST will begin in 16 MHz high speed mode. This is the way AdSpeed ST is set when shipped. If A amp B are connected, AdSpeed ST will begin in true 8 MHz mode. A amp B should be...

long soundcmdmodedata Falcon030 Support Package

Sat, 19 Mar 2011 09:45:05 GMT

This command is used to get or set the following sound parameters. If a negative number is used as the input then the current setting is returned. 0 LTATTEN Sets the left channel output Attenuation. Attenuation is measured in -1.5Db increments, INPUT int xxxx xxxx LLLL xxxx Where LLLL- Attenuation to set. xxxx- Reserved. RETURNS int xxxx xxxx LLLL xxxx 1 RTATTEN Sets the right channel output Attenuation. Attenuation is measured in -1.5Db increments. INPUT int xxxx xxxx RRRR xxxx Where RRRR-...

Plackbeartte reasmre AtariAdventures

Thu, 17 Mar 2011 21:19:03 GMT

Blackbeard's Treasure is written in Atari PILOT, which stands for Programmed Inquiry, Learning Or Teaching. PILOT is the easiest of computer languages to learn and was created as a text-oriented language. It was first conceived as a tool for writing conversational programs, and is designed to handle all types of user input with ease. There is a tremendous amount of user input required to play an interactive adventure therefore, PILOT is a very good language for interactive adventure programs....

Writing bytes to Flash Memory Atari ST System on Chip

Wed, 16 Mar 2011 17:13:02 GMT

Next on the list was to load data into the RaggedStone onboard Flash memory. A design was found on the Xilinx website for the Spartan-3A 3AN Development Starter Kit. This design was intended to be used with the ST Microelectronics M29DW323DT Flash memory that was featured on the Xilinx Spartan-3A 3AN development board. It Figure 20 -Flash Programmer menu uses the Xilinx Picoblaze embedded PicoElaze H29DW323DT FLASH Programmer vl.00 E-Erase all B-Erase blocks 0-5 P-Pnogram HCS File B-Drite byte...

If Ch Then Return Atari Adventure Games

Tue, 15 Mar 2011 10:38:47 GMT

1210 IF AC 1 AND CH 6 AND KiP,6 l 0 R AC 0 AND CH 8 AND K P,B gt 17 OR AC 1220 IF AC 0 AND CH 9 AND K P,9 0 THE 1230 IF AC Q AND K P,13XC CH THEN 12 80 1240 IF AC THEN K P,CHM P,CH -1 K P, 13 K P,13 C CH IF CH 7 THEN K P,14 K P, 14.1-1 1250 IF AC 0 THEN K P,CH K P,CH 1 K P,13 K P,13 -C CH IF CH 7 THEN K P,1 4 K P,14 1 1260 SETCOLOR 2,11,0 IF C2 THEN CH CH 1 IF CH B THEN SETCOLOR 2,8,4 RETURN 1270 GOSUB J3 SETCOLOR 2,8,4 RETURN 1280 SETCOLOR 2,3,0 GOSUB J5 SETCOLOR 2,8,4 IF C2 THEN CH CH 1 1290...

The Automatic Proofreader 1 Atari Educational Programs

Sun, 13 Mar 2011 22:46:39 GMT

110 FOR 1 1536 TO 1700-.READ A POKE I,A CK C K A NEXT I 120 IF C K lt gt 1907 2 THEN Error in DATA Stat ements. Check Typing. END 130 A USR lt 1536 140 Automatic Proofreader Now Activat 1536 DATA 104,160,0,185,26,3 1542 DATA 201,69,240,7,200,200 1548 DATA 192,34,208,243,96,200 1554 DATA 169,74,153,26,3,200 1560 DATA 169,6,153,26,3,162 1566 DATA 0,189,0,228,157,74 1572 DATA 6,232,224,16,208,245 1578 DATA 169,93,141,78,6,169 1584 DATA 6,141,79,6,24,173 1590 DATA 4,228,105,1,141,95 1596 DATA...

Booting Your Own Disk Atari Voice Programs

Sun, 13 Mar 2011 02:51:25 GMT

When you place a disk into the drive, and turn on the computer, the drive turns on and a program boots. This program could be the DOS or another program. Most commercially available machine language programs will boot themselves when you turn the computer on. BASIC programs are usually loaded into the computer. You may have noticed a program on your ATARI disk called AUTORUN.SYS. If you examine the disk directory from various software firms, you may find the AUTORUN.SYS is anywhere from one to...

Tt Video Subsystem Atari TT030 Hardware Reference

Sat, 12 Mar 2011 23:37:41 GMT

8400 RW ----rrrR gggG bbbB TT Palette RegO 8402 RW ----rrrR gggG bbbB TT Palette Regl 85FE RW ----rrrR gggG bbbB TT Palette Reg255 8604 RW -------- xxxx xxxx Disk Data Path WDC 8606 RO -------- -----xxx DMA Status 8606 WO -------x xxxx xxxx DMA Mode CWDL 8608 RW -------- xxxx xxxx DMA Pointer High 860A RW -------- xxxx xxxx DMA Pointer Mid ooOC RW ----- xxxx xxxO DMA Pointer Low 8700 RW -------- xxxx xxxx DMA Pointer Upper 8702 RW -------- xxxx xxxx DMA Pointer Upper-Middle 8704 RW --------...

Rt Fd Rt Fd Rt Computer Art and Animation

Mon, 07 Mar 2011 17:25:57 GMT

Notice, as you enter these commands, that the text you have already typed automatically moves up one line when your new text runs out of room at the bottom. Why do you suppose we added the final RT 90 command, especially since the square appeared complete when we drew the last line The final RT 90 command was needed to return the turtle to its exact starting position and orientation. As you gain more experience with turtle graphics, you will generally find it valuable to make sure that each...

Rem Play The Game Atari Programming Hints

Wed, 02 Mar 2011 08:58:22 GMT

5 I AM THINKING OF A NUMBER BETWEEN 60 LOW. AND HIGH. . 70 WHAT IS YOUR GUESS 8U GUESS INT lt RND u gt 2S 1 82 REM 84 REM GET THE PLAYER'S ANSWER 86 REN 90 L.OSUB 10U0 10U POSITION 14,28 110 IF A GUESS THEN 290 112 REM 120 IF ACQ JESS THEN TRY HIGHER 130 IF A gt GUESS THEN TRY LOWER 140 GOTO 98 280 Y8U GOT IT 218 FOR 1 1 TO 500 NEXT 1 220 GOTO 38 970 REM JOYSTICK NUMBER SELECT 980 REM DISCUSSED LAST ISSUE 990 REM 1010 POSITION X,Y A. FOR SND 8 TO 15 'SOUND 0,10O-A, 18,15-SND NEXT SND 1020 IF ....

Special Function Keys Basic Programming Techniques

Mon, 28 Feb 2011 10:51:45 GMT

The upper left key on your keyboard is marked ESC. This key will allow you to escape the normal function of the key and give you additional control. Press the escape key twice. The second time you press it, a strange character will appear on the screen. Pressing the escape key, then die control key with the clear, insert, delete, or any arrow key will make the computer print different characters. These keys and functions will be very useful when you edit your program or have messages printed on...

METADOS v Now Available AtariDevelopment

Mon, 28 Feb 2011 05:46:04 GMT

Metados v2.0 is now available to developers in the download sections of the developer's areas on GEnie and Compuserve. Metados v2.0 is the software interface to devices such as CDROM drives. Metados v2.0 includes a driver that can be used with any SCSI CDROM drive that follows the industry standard command set, connected over the TT030's SCSI port. The driver have been tested with Chinon, NEC, and even Apple CDROM players. A driver that would allow such drives to be connected through a host...

A ATARll AtariDevelopment

Sat, 26 Feb 2011 21:29:57 GMT

Serial port, Modem 1 port now uses SCC chip for higher transfer rates instead of 68901 MFP chip. STE-compatible hardware video scrolling STE-compatible joystick ports SCSI 2 port for hard disk drives, scanners, tape drives, etc. And of course, there are many other new features, but it would take too long to list everything. Approximately 25 machines were on display at the show, and virtually all of them were purchased by excited developers at the end of the show. Additional developer units...

Hg Ij Db Gf Id Ac Ap Hc Nf Di Pn AtariApplications

Fri, 18 Feb 2011 09:12:20 GMT

POKE SC TP I ,101 POKE S C T P I gt 1 , 1 0 2 N EXT I IF TP LD 1 0 AND D 0 THEN SOSUB 220 RE TURN FOR 1 1 TO LD POKE SC TP LD I ,99 POKE SC TP LD I gt 1, 1 00 NEXT I FOR 1 1 TO LD TP LD I TP I NEXT I RET URN SOUND 0,0,0,0 BONUS L 100 POSITION 13,2 1 7 1 pnc t t r hm 14,22 7 BO SCR SCR BONUS 7 SCR FOR 1 1 TO 200 SOU ND 0,RND 0 40 20,10,8 NEXT I SOUND 0,0,0,0 L L 1 LET COM 0 D 0 IF L 4 AND L VL lt gt 3 THEN LIVES LIVES 1 POS ITI0 N 13,23 7 L K i IF L 4 AND LVL lt gt 3 THEN FOR 1 1 TO 100 S OUND...

Important Warranty Information Limited Warranty Atari AdSCSI ST Series

Mon, 14 Feb 2011 21:52:12 GMT

ICI , Inc. warrants lo Ihe original consumer purchaser lhal these 1CF , Inc. Personal Computer Products not including computer programs shall be free of defects in material or workmanship for a period of 90 days for diskettes and tapes and one year for Ihe FA-ST Tape Drive System from Ihe date of purchase. If any such defccl is discovered within the warranty period, ICI , Inc.'s sole obligation will be lo repair or replace, at its election, the Computer Product free of charge on receipl of Ihe...

Rem This Is The Cursor Up And Cursdr Right Program Writing in Basic

Fri, 28 Jan 2011 08:29:11 GMT

80 FDR N 1 TO 4 PRINT NEXT N 90 INPUT BS RUN this program and see what the menu presentation looks like. Try a couple of data entries. The example was kept as simple as possible so that we can work with it. Now enter the direct command and see what you get. It printed out exactly what you entered. In this case, the Screen Editor began the line immediately at the current cursor position, and accepted everything you typed thereafter. With this kind of menu, what happens if you type a name reply...

Find a Day of the Year AtariBasic

Tue, 25 Jan 2011 20:46:26 GMT

Here is a subroutine that computes the day within any year from 1901 to 2099. You simply provide the four digit year, the month and the day of the month. FIND AY.LST takes into account whether or not a year is a leap year. 20281 REM MONTH,DAY,YEAR, amp STRINGS 20285 IF YEAR 4 INT YEAR 4 AND M0NTH gt 2 THEN NUMBER NUMBER 1 If you look carefully at this subroutine, you will see that the day number is computed first by figuring the number of preceding months multiplied by 28 days. Next a table is...

Using the AES Scrap Library AtariDevelopment

Mon, 24 Jan 2011 11:26:38 GMT

The GEM AES Scrap Library provides a standard method of communication between applications for implementing a clipboard to allow data interchange. There are two GEM AES scrap library functions, sap_read and scrp_write . WORD sc_wreturn -scrp_write sc_wpscrap The sap_write call establishes the directory and filename of the last item to be written to the clipboard folder. A normal sequence of events for an application to put something in the clipboard would be 1 Do a scrpjreadO call to determine...

Ekkehard Floegel Elcomp Publishing Redrock Lane Pomona Ca Forth on the Atari

Sat, 22 Jan 2011 23:51:38 GMT

Fig 8-2 Example for an address input. The main words of the mailing list are NEW NEW creates a new mailing list. The number FIRST , stored in the first two bytes in block 100 is set to one. In FIRST the number of the next entry is stored. INPUT enters the input mode of the mailing list. The mask is placed on the screen and the cursor is placed into the first field. The cursor is moved to the next field by pressing the RETURN key. It is also moved if all places of a field are filled with...

Memory Usage Disk Guide Atari 400 and 800

Wed, 19 Jan 2011 14:21:52 GMT

Keft and Right Cartridge Right Cartridge Only ATARI 800 computer ATARI 800 computer Right cartridge lllllll Display exact size depends on graphics mode V DOS BASIC RAM if BASIC cartridge present k-'.vj Operating system RAM Memory Locations Without BASIC Resident Memory Locations with Standard ATARI BASIC Resident Operating System ROM Memory Locations 55296-65535 Operating System Vectors Memory l.ocations 58368-58533 Screen RAM depends on graphics mode RAM Used by Operating System, Resident...

FREE SECTORS Tgf AtariBasic

Wed, 12 Jan 2011 15:41:30 GMT

The following paragraphs give you a brief description of each program. Application Programs convert.bas This is a UTILITY that converts a machine language binary load file into BASIC DATA statements. The resulting DATA statements are automatically LISTed to either cassette or disk. This program actually creates an entire subroutine for POKEing a machine language routine into memory. For more details see page 39. DATAPAK.BAS This UTILITY is similar to CONVERT, but it is for the more advanced...

Special Effects Routines AtariBasic

Wed, 12 Jan 2011 15:40:53 GMT

Here is one last demo program for you to try before we get into the sound effects routines. This demo shows you some of the strange effects you can get with static sound by making use of waveform interference effects. I won't try to explain them here. Try them and see what you think. Figure 1 4.7 Sound Effects Demo Number Two 100 REM S0UND2.DEM 110 POKE 752,1 PRINT CHR 125 SOUND 0,0,0,0 DELTA 1 120 POSITION 8,2 PRINT SOUND EFFECTS DEMO 2 130 POSITION 11,11 PRINT PADDLE 0 REM POKE 53768,4 140...

Controlled Keyboard Input Routines AtariBasic

Wed, 12 Jan 2011 03:09:53 GMT

The routines in this section will work very well with the formatted input routines in the next chapter. In this section, we will concentrate on how to get multi-key inputs from the keyboard without using the INPUT command. Many applications require the user to input a string of characters, such as a person's name, in response to a prompt. The routine in Figure 11.9 illustrates a simple, but effective technique for this purpose Figure 11.11 INKEY1.LST-Controlled String Input 20550 REM INKEY1.LST...

Ee Kj Ie Cf Fd El Bk Ch Ck Cf Cd Ob Hp Hb Ha Ip Ck Hn Jf Da AtariApplications

Sun, 02 Jan 2011 19:15:13 GMT

COLOR F5 PLOT X-l,Y DRAWTO X l,Y PLOT IF CHRt A Y' IF CHR A N' THEN COLOR THEN COLOR DRAWTO X l,Y PLOT X,Y-l DRAWTO X,Y 1 POP COLOR F5 GOTO 4120 7 2 UP gt GOTO 4980 IF R gt GRPY 1 THEN POP GOTO 4160 RETURN ST gt 360 UP ST gt 360 CUP gt SP gt 360 THEN RETURN 5420 B2 1 TO 168 READ A,10,6 NEXT IF ST lt 0 EN POP IF ST lt 0 HEN POP IF SP lt 0 EN POP IF SP lt 0 HEN POP RETURN IF B2 1 RESTORE FOR 1 1 SOUND 0 ML ADR R gt RETURN DATA 104,201,4,240,9,170 DATA 240,5,104,104,202,208 DATA...

Irqst Skctl Skstat Atari Assembly Language

Sun, 02 Jan 2011 15:58:09 GMT

R Read serial port status W Interrupt request enable R Interrupt request status W Serial port control R Reads serial port status Locations 53776 to 54015 are a repeat of locations 53760 to 53775. As of this writing these locations have no use. PI A 6520 Chip is located at addresses 54016 to 54271. These locations are used for control ports, controller jacks one through four and to process VINTER and VPRCED. R W data from controller jacks one and two R W data to from jacks three and four W R...

The MEMLO Pointer Atari Assembly Language

Thu, 30 Dec 2010 10:55:36 GMT

MEMLO is also a 16-bit value, but is stored in memory addresses 2E7 and 2E8 of your computer or 743 and 744 in decimal notation . When you turn your computer on, without a cartridge or a disk in it, your computer's MEMLO pointer always contains the lowest free address in RAM, the lowest address at which user written programs can begin. That means, that when you turn your computer on, MEMLO and LOMEM contain exactly the same address, the lowest free address in RAM. That address is also the...

Connecting The Computer Console Atari 800 Guide

Mon, 13 Dec 2010 11:28:07 GMT

5 Locate the round cord that comes from the back of the computer console. Plug the end of this cord into the terminal on the TV Switch Box labeled COMPUTER GAME . Then move the switch into the COMPUTER GAME position. 7 Set the Channel Select Switch on the right side of the computer console to the same channel. After you turn on the computer, you may need to adjust the fine-tuning knob on your TV to improve the reception. 6 Turn on your TV set and tune it to Channel 2 or 3 -whichever is weaker...

Base Hardware Atari ST System on Chip

Sat, 11 Dec 2010 20:34:05 GMT

The design is to be based around a Xilinx FPGAs, as there are special free versions of the IDE Integrated Development Environment which are only slightly limited from the commercial versions. The type of Xilinx fitted to the board needs to be large enough in terms of logic elements to fit the whole project, which is not something that can be estimated easily. The Atari ST is based on a 5 volt logic platform, and so having some 5 volt capabilities on the chosen development board will be a real...

Using Your Hard Drive Atari AdSCSI ST Series

Fri, 10 Dec 2010 05:12:55 GMT

Note It is assumed in this chapter that your hard drive is already assembled and formatted. If not, see the chapter on assembly and the chapters The 1CD Disk Formatter and The Hard Disk Utilities Program before reading this chapter. Connecting your hard drive to your Atari ST or Mega computer is very easy. You may place it anywhere the cable will reach. Longer cables are not recommended. Once you have positioned the hard drive where you want it and have made sure that everything is turned off,...

Printing to the Screen from Machine Language on the Atari Atari Programming Hints

Wed, 08 Dec 2010 09:58:30 GMT

If you use machine language you ll find this useful. There are two techniques presented here screen output and a relocating loader. If you are machine language programming on the ATARI, it can be very advantageous to know where some of the operating system subroutines can be found. I can provide you with only one at this time, but it s one of the handier ones. This is the output subroutine for the Editor device. It accepts the full ATASCII character set, printing the displayable character on...

Good Habits to Form AtariBasic

Tue, 07 Dec 2010 04:24:45 GMT

You now know the general approach to use when developing a program, but there are some other things that you may need more guidance on. For example, I am sure that you have heard the term backup before. This term refers to more than just making an extra copy of a completed program. It is an essential tool that every serious programmer should use in the process of developing a program. I have no sympathy for the programmer who cannot meet a deadline because the only copy of my source was stolen...

Info Bmo Atari Assembly Language

Mon, 06 Dec 2010 13:08:32 GMT

box around inverse video ES Escape Key BS Back space Box 42B. The Yellow Submarine SUBS Listing BOX 42C Vertical Scrolling Routine The Yellow Submarine 205 COUNT keeps track of how far we ve scrolled 206 SCRLREG keeps track of value to put in VSCROL. CPY 120 BEQ END STY COUNT LDX SCRLREG INX CPX STX VSCROL STX SCRLREG LDA 6 STA TIMER RTS 164,205 First check to see if submarine 200 has scrolled to top of screen 192,120 Here, the value 120 limits 240,19 the scrolling 132.205 Save Y for next pass...

Introduction Zilog SCC Serial Communication Controller

Mon, 06 Dec 2010 08:52:33 GMT

The Zilog SCC Serial Communication Controller is a dual channel, multiprotocol data communication peripheral designed for use with 8- and 16-bit microprocessors. The SCC functions as a serial-to-parallel, parallel-to-serial converter controller. The SCC can be software-configured to satisfy a wide variety of serial communications applications. The device contains a variety of new, sophisticated internal functions including on-chip baud rate generators, digital phase-lock loops, and crystal...

Setcolor Graphics Color Print Plot Drawto Position AtariGraphics

Fri, 03 Dec 2010 15:48:55 GMT

Can you remember what each statement does Match each of the above GRAPHICS statements with the following descriptions. 1 ._clears the screen and sets the screen format. 2. _ changes the values in the color registers. Can be used to change background, border, and text colors. 3. _displays a point square on the screen. 4. _is used to choose the color of points and lines 5. _is used to connect two points with a line. 6. _is used to specify a place on the screen to 7. _causes text to be placed on...

Chapter Sub Atari AdSCSI ST Series

Thu, 25 Nov 2010 05:49:18 GMT

The following is a list of the components you will need to build a hard drive system for your Atari ST or Mega computer. All of these except the drive mechanism are available from ICD either individually or as complete kits. This allows your computer to communicate with SCSI devices. You will need an ST506 412 compatible drive or an embedded SCSI drive. If using an ST506 412 compatible drive, you will need a compatible SCSI hard drive controller. This is not the type of controller normally...

All New Atari AtariApplications

Wed, 17 Nov 2010 02:22:21 GMT

With nearly 30 never-before-published articles and programs, including more than a dozen games, COMPUTE s Atari Collection, Volume 2 brings you high-quality software for the Atari personal computer at an affordable price. Like its forerunner, COMPUTEI s Atari Collection, Volume 1, this book offers outstanding programs that run on the Atari 400, 800, XL, and XE computers All the programs have been fully tested and are ready t lt type in using the error-checking utility, The Automatic...

Contents AtariApplications

Wed, 17 Nov 2010 02:21:43 GMT

Chapter 1. Applications ......................... i Dana Noonan ................................... 8 John L. Nuss ................................... 18 An Atari Database with Application Generation Features Ronald Marcuse ................................ 26 Vernon M. Daly ................................ 41 Chapter 2. Programming Aids .................. 47 John Hebrink .................................. 49 Robert Dolan Brian Totty .................................... 56 Jim Bender...

Fscrolllst AtariBasic

Thu, 11 Nov 2010 22:34:29 GMT

GLOWING Message Routine 182 GRAPHICS 2 Sample Title 182 - Auto-Scan Mode 76 Hexadecimal-to-Decimal Conversions 75 HH MM SS 112 Hours, Minutes, and Seconds 113 House flies 219 How to Load Execute USR Routines 37 Interleaved methods 68 Interleaved Overlay 67 Inverting the Characters in a String 90 IOCB with Machine Language 202 Keyboard Input Routines 159 Keyboard Menus 154 Keyboard 158 Key 131 Klaxon siren 222 Knuth, Donald E. 135 Minimizing Program Execution Time 29 Negative numbers pos. and...

THE PROGRAM Qvh AtariAdventures

Wed, 10 Nov 2010 18:41:19 GMT

Begin by initializing the program. Turn off graphics, clear register of last key pressed 764 , and create a graphics mode using memory locations 1373 and 1374 as in the Blackboard s Treasure program. 5 U INITIALIZE 5350 INITIALIZE 5355 GR QUIT 5360 C 5 B764 255 5365 C S B 1373 0 CNO TEXT WINDOW 5370 C 3B1374 2 GRAPHICS MODE 2 5385 WRITE S, eSC i n verse 3c AC i n verse o-f-fUpE Set Variables and assign room numbers to all objects L lights on or off R room number F floor player is on ROOM the...

Press Space Bar To Contin AtariAdventures

Wed, 10 Nov 2010 18:40:50 GMT

3828 T STHE DOG LEAVES TO BURY THE BON 3825 C SOBJECT NOTHING 3838 U D6GPIC 3835 J NAIT 3848 NEAR 3845 M GLO 3858 TN I CAN T WEAR THAT 3855 JN WAIT 3868 J CGB154908 DONTHAVE 3865 C GB1549 58 3878 J OK 3875 BR 3885 GR G0T074,44 TURNT0188j DRAN23J TUR N45jDRAW7i TURN135j FILL23JTURN45jFILL7 3895 GR G6T0-76,-38jTURNT08J FILL23 TUR 3988 GRiPEN ERASEjGOTOSO,21jDRAN48 3905 GR G0T0-75,-6 TURN45J DRAH26 3910 GR GOTO-23, 45 TURN90J DRAN24 3915 GR G0T023,-6jDRAM24 3920 E 3925 5R 3935 GR G0T056, 44...

The Edit menu Devpac 3 Manual

Wed, 10 Nov 2010 04:01:52 GMT

The commands on the top of the Edit menu may be used to perform the conventional Cut, Copy and Paste operations on marked blocks. These are described under Block commands, below.

Ss S Ss Ss Ss Ss Ss Ss Ss Ss Ss 1 Atari Adventure Games

Fri, 22 Oct 2010 11:30:50 GMT

Jump to program Initialization. 1 GOTO 2620 5 FOR P N1 TO LEN P CHR ABS 155 Pi R ETURN The encryption method is a simple one, which results in leaving punctuation unmodified, and inverting the order of the letters of the alphabet. This simple inversion process has the advantage of using the same routine to decode the text as was used to encode it. In Operation Sabotage, the user s input is encoded, the internal searches and comparisons are done in encoded form, and the response is decoded and...

Character Generator Atari Adventure Games

Sat, 16 Oct 2010 13:20:03 GMT

Atari Character Generator is an Atari utility program requiring 16K RAM. The first thing to do before running the Character Generator is to press SYSTEM RESET. Then load the program, and type RUN. It is absolutely necessary to press SYSTEM RESET prior to running any program using a modified character set. Forgetting to do so can cause the computer to lock up and lose the program currently in memory. After about twenty seconds you should see all the characters except inverse displayed on the...

Boolean Operators Logical Building Blocks AtariBasic

Sun, 03 Oct 2010 09:17:02 GMT

Boolean operators, which take their name from the famous mathematician George Boole, are a set of mathematical relationships that are used to perform logic operations. Such logical or Boolean operators enable a programmer to easily program logic functions into a program. There are four fundamental Boolean operators or, and, not, and the often confusing exclusive OR, xor. The exclusive OR is sometimes abreviated eor instead of xor. We will discuss each of these operators in more detail and show...