Rainbow 95 Preview ------------------ The Atari 8-Bit Emulator for Windows 95/NT Welcome to the world of Rainbow! Now you can run many of your favourite Atari 8 bit software on your PC under Windows 95/NT!. Here's a quick list of key features in the full shareware version (soon to be announced) · Emulates 400/800, 800XL, 130XE and 5200 machines · Has 48K RAM for 400/800 machines; full 64K RAM for 800XL; full 128K for 130XE · Fast full and medium screen displays · Accepts 8K and 16K cartridge images; accepts 16K and 32K ROMs for 5200 · Also runs Super Cartridges · True 256 Atari colours · Full ANTIC/GTIA graphics, namely all ANTIC modes, Player/Missile Graphics, fine scrolling and Display List Interrupts · Two virtual disk drives capable of reading single and enhanced density images · Transfer files between disk images and your Mac hard disk · Four joysticks (via keypad) and four paddles (using mouse) · Plays many games such as PacMan, Defender, Joust, Qix, Eastern Front, Zaxxon, M.U.L.E., Montezuma's Revenge, Donkey Kong, Miner 2049er, Necromancer, Karateka, Drol, Kaboom, Pole Position, Star Raiders, BallBlazer, Alternate Reality, Caverns of Mars, etc. The preview has full graphics emulation except for vertical fine scrolling. Other features such as larger screen displays and full 800XL/130XE emulation are not active in this preview. System requirements ------------------- Any PC compatible running Windows 95 or NT. Rainbow needs 1.5MB RAM to run. A Pentium machine is recommended. What's inside? -------------- After unzipping, there should be the following items:- - Rainbow 95 Preview application - Demo disk image - Read Me Preview file (this one) Atari ROM needed ---------------- IMPORTANT: Before you can run Rainbow you will need an image of one of the following:- · 400/800 10K Operating System ROM or · 800XL/130XE 16K Operating System ROM and 8K BASIC ROM or · 5200 2K monitor ROM. Due to copyright restrictions, Atari ROM images are not included. Let's go! --------- If you have the 400/800 10K OS ROM file on your PC, rename it as OP_400. If you have the 800XL/130XE 16K OS ROM file, rename it as OP_SYSXL and the 8K BASIC ROM file as OP_BASIC. If you have the 5200 2K monitor ROM file, rename it as OP_5200. Put these file(s) in the same folder as Rainbow. Set your monitor to 256 colours. Now launch Rainbow :^) Rainbow looks for OP_400 first. If it's there, Rainbow enters 400/800 emulation mode. Otherwise it looks for OP_SYSXL. If it's there, 800XL (limited) mode is entered. Finally it will look for OP_5200 and if found, Rainbow impersonates the 5200 games console. If you have more than one set of OS files, choose the emulation mode under the 'System' menu. N.B. On this preview, 800XL emulation is 'limited', i.e. the 16K RAM under the ROM cannot be activated. This is also true for the 130XE mode which also has the extra 64K inactive. The full shareware version will give you complete 800XL and 130XE emulation. Try out the demos! ------------------ Insert the demo disk and re-boot (select 'Reboot' under 'Reboot' menu), which is like switching your Atari off and on again. N.B. In 800XL/130XE mode be sure to keep 'OPTION' (F1) pressed on re-booting to disable the BASIC ROM else the demos may not run properly (see 'Keyboard' below). This disk will present you with a menu of 3 demos to try out. Check the 'Show FPS' item under the 'Extras' menu. This will give you real-time statistics on how well Rainbow is performing on your PC. Adjust the frame rate in the 'TV' menu so that the CPU efficiency is roughly 100%, i.e. normal 8-bit speed. The 'fps' figure gives you the number of frames being generated every second. After you've finished playing with the demos, select 'Re-Init' under the 'Reboot' menu. This removes all cartridges and disks from the drives and boots up as though you'd just launched Rainbow. BASIC and DOS ------------- If you're in 400/800 mode, try inserting a cartridge (under the 'System' menu), e.g. BASIC if you have the file. If successful, the system will automatically re-boot and present you with the READY prompt. Say you want to now boot up BASIC with DOS. Insert a disk image with DOS into drive#1. Rainbow will recognise standard images as well as ATR ones in either single or enhanced densities (standard images are carbon copies of the floppy disk image; an ATR image is a standard image with a 16 byte header). Now simply reboot. After a few moments, you will be back in the BASIC but this time DOS is present. To check, just type DOS and you will go into the DOS utility menu. N.B. A quicker way to start up in BASIC with DOS booted is to first insert the disk image and then insert the cartridge. Frame rate ---------- A real Atari 8-bit computer generates the playfield, player/missile graphics and updates Player/Missile collision registers every 60th of a second. To make Rainbow run at an acceptable speed, you can alter the frequency with which this takes place under the 'TV' menu. With the lesser frame rates, collision registers are updated less frequently and so occasionally your PacMan may pass through a ghost with no ill effect! Increase the frame rate to avoid this. Some games like Jumpman, Caverns of Mars and Buried Bucks only work with the 'Every' frame rate setting. Disk drive ---------- Disk drive#1 is available to load single density images. Single density images have 720 sectors at 128 bytes per sector ==> 92160 bytes in total. ATR images have a 16 byte header, i.e. 92176 bytes. N.B. This preview does not recognise ATR disk images of any other size other than 92176 bytes. Keyboard -------- In addition to the standard keyboard, some other important keys are System Reset = F12 Option = F1 Select = F2 Start = F3 Help = F4 (XL/XE only) Pause = F4 (5200 only) Break = SHIFT ESC Caps/Lowr = END Atari Logo = PAGE UP The PC CAPS LOCK is not functional. A number of extra editing keys are included, i.e. the cursor keys work and Insert Char = INSERT Delete Char = DELETE Clr screen = HOME. Joystick -------- MAKE SURE NUM LOCK IS *** ON *** Stick 0 (Player 1) is enabled. Use the keypad for this (UP=8;LEFT=4;RIGHT=6;DOWN=5) and FIRE is Control or 0 on keypad. Notebook users can use the L<>? keys for the joystick by checking this item under the 'Joy' menu. These keys are then NOT recognised as keystrokes. Uncheck the L<>? item to use these as keystrokes. 5200 emulation -------------- The 5200 is a curious machine with more or less the same hardware as a 400/800 computer. It has only 16K RAM but can accept 16 or 32K ROMs. The full size keyboard is gone and has a simple numeric keypad instead. Since the hardware chips are mapped to different areas in the 5200, standard 400/800 software is incompatible but 5200 games *can* be converted to run on the 400/800 with some programming know-how. The monitor ROM is a tiny 2K OS which just sets up the 5200 for operation and draws the pretty rainbow fuji logo. You can insert either 16K or 32K 5200 ROM images in this mode. Once again, 400/800/800XL/130XE games will *not* work with the 5200 and vice versa. ------------------------------------------------------- Comments and suggestions to... E-mail: jx91@cityscape.co.uk WWW : http://www.cityscape.co.uk/users/jx91/ emulators.html Rainbow (c) 1995-6 by Chris Lam. Rainbow 95 (c) 1996 by Chris Lam. -------------------------------------------------------