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MCCTV Atari 800XL core v0.60 release note
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===========================================
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Mark Watson
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scrameta@gmail.com
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-------------------------------------------
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All control is via the MCC controller.
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Currently games are limited to those that can be played with start/select/option/reset and joystick.
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Special/console keys (joystick 1):
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Start button or button 4 - Start
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Select button or button 3 - Select
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button 2 - Option
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left shoulder 1 - Reset
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left shoulder 2 - Cold start (clear base 64KB RAM and reset)
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right shoulder 1 - Select drive 1 and cold start
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Use joystick to make selection in menu
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Left - up several lines
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Right - down several lines
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Up - up 1 line
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Down - down 1 line
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Fire - select
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Remember many titles require holding 'option'
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Select "DIR .." to go up a directory
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Select "DIR xxx" to go down a directory
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right shoulder 2 - System settings menu
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Use joystick to make selection
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Turbo - system speed
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Left/right to select
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1x (default): is very compatible - speed closely matches original hardware ~1.7MHz
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2x: ~3.4MHz - less compatible
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4x: ~6.8MHz - less compatible
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8x/16x: 13MHz, 27MHZ - limited by SDRAM latency, not quicker than 4x yet.
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RAM
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Left/right to select
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64KB: like 65XE
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128KB: like 130XE, 64KB ext ram, switchable by antic/cpu
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320KB(Compy shop)(default): 256KB ext ram, switchable by antic/cpu
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320KB(Rambo): 256KB ext ram, both antic/cpu switch together
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576KB(Compy shop): 512KB ext ram, switchable by antic/cpu
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576KB(Rambo): 512KB ext ram, both antic/cpu switch together
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1088KB: 1024KB ext ram, both antic/cpu switch together
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4160KB: - very imcompatible!
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ROM
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Right/fire: File selector
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Select a different system OS ROM - can by 16KB or 10KB
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Drive
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Left: Remove disk
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Right: File selector
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Fire: Put this disk in F1
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Cartridge 8K simple
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Fire: select file
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This allows a ROM to be loaded in the place of BASIC
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Some simple ROM cartridges can be used
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This is temporary until proper cartridge support is implemented
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System ROM:
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Loaded from /System/rom/atari800/atarixl.rom
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Basic:
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Loaded from /System/rom/atari800/ataribas.rom
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Disk images:
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Default dir: /atari800/user
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Supported types:
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.ATR - Atari disk image with header. single/medium/double density.
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.XFD - Atari disk image without header.
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.XEX - Atari executable. A simple bootloader is loaded, not 100% compatible.
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Important notes:
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When running Atari software a lot of programs need to have basic disable. Hold option when pressing reset.
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Features
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* Acid 800 test pass
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* 99% of software runs
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* Version for PAL/NTSC VGA/SVIDEO
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* Write support
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* Drive emulation
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Known issues
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* No keyboard support yet
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* ~1% of programs fail
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* Copymate write verify fails
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* Entering menu during disk access may hang ZPU (used for drive emulation/menus)
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* Hardware matches Atari very closely - including overscan corruption - this often shows up on VGA monitors.
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* Cartridge support may be broken
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Enjoy !
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