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diff --git a/arm9/instructions.txt b/arm9/instructions.txt deleted file mode 100644 index c0d81d2..0000000 --- a/arm9/instructions.txt +++ /dev/null @@ -1,155 +0,0 @@ - DS81 - ---------==============================--------- - - Copyright 2006 Ian Cowburn - ianc@noddybox.co.uk - - -1. LICENSE ----------- - - The code to DS81 is released under the GNU General Public License. See - the text file COPYING for details. - - Other included software is provided in good faith, is not released under - the GNU General Public License, and is copyright their respective authors. - If any of these authors disagree with the distribution of their work then - contact me and it will be gladly removed. - - ZX81 BASIC ROM (c) 1981 Nine Tiles Networks LTD - 3D Monster Maze (c) 1983 Malcom E. Evans - Mazogs, City Patrol and Sabotage (c) 1981, 1982 Don Priestley - - -2. ZX81 -------- - - The ZX81 was an 8-bit computer released by Sinclair Research in 1981, using - the Z80 CPU. - - It was a monochrome machine with no sound (be quiet those at the back of - the room who used to be able to do sound by doing odd things with the video - signal) and a text mode that could be used to plot graphics at a resolution - of 64 by 44 (hmmm, smaller than most icons nowadays). - - It came with 1K of RAM, though most people opted for a massive 16K RAM pack. - - -2. DS81 -------- - - DS81 is an emulation of the 16K ZX81 and is is supplied in two main forms, - as a native Nintendo DS executable and a version with a Gameboy Advance - wrapper (in case your Ninentdo DS homebrew device only supports running - GBA executables). - - In addition to this two different versions are supplied, one which - initialises the FAT library and one which doesn't. They are identical save - for this, and separate ones are supplied in case the FAT library - initialisation causes problem on your homebrew device: - - ds81.nds - Nintendo DS version - ds81.bs.gba - As above with a GBA wrapper. - - ds81-nofat.nds - Nintendo DS version; no FAT library initialisation. - ds81-nofat.bs.gba - As above with a GBA wrapper. - - I'm probably being overly paranoid there, but better safe than sorry. - - -3. Using DS81 -------------- - - When run DS81 displays a splash screen with copyright information and - whether the FAT library has been able to find a supported device for the - loading of external tapes. - - Once the A button has been pressed the ZX81 resets and displays itself - on the top screen, and a soft keyboard is displayed on the bottom, touch - sensitive, DS screen. - - If you've never used a ZX81 before then you may wish to find out how the - keyboard works -- it uses a keyword entry system, rather than the straight - typing if commands. So, for instance, the key P is pressed to enter PRINT - when the cursor is in keyword mode (the cursor in an inverted K). - - Trust me; you were glad of it when using the original ZX81's hard plastic - membrane keyboard. - - When using the soft keyboard by default the shift key is 'sticky' and once - used will stay held down until pressed again. - - The World of Spectrum has the original ZX81 manuals, either as a PDF - or in HTML form: - - http://www.worldofspectrum.org/ - - At the bottom of the keyboard is an area where you can click to bring up a - menu. Either use the stylus, or the joypad and button A to select an - option from the following choices: - - RESET ZX81 - This resets the emulated ZX81. - - SELECT TAPE - Selects the built-in tape to use (DS81 has a number of ZX81 tapes - built into it). The next section has extra information on the - loading of games. - - STICK SHIFT ON - Sets the shift key so it stays down until pressed again. - - STICK SHIFT OFF - Sets the shift key so it behaves likes all the other keys. - - MAP JOYPAD TO KEYS - Allows you to redefine the DS's joypad and buttons to ZX81 keys. - Follow the on-screen instructions. - - CANCEL - Cancels the menu. - - - -3. Using the internal tapes on DS81 ------------------------------------ - - Games on the ZX81 were supplied on cassette. DS81 includes a few tape - files that are selectable from the menu. Follow the on-screen instructions - to select the game. A quick description and the controls to use are - displayed on the top screen. - - Once you've selected a tape you can load it in the emulator by using the - command LOAD "". If you're really stuck with the ZX81 keyboard: - - 1. Select your tape. - 2. Reset the ZX81 from the menu. - 3. When the inverse K cursor is displayed press the J key to generate - the keyword LOAD. - 4. Press the SHIFT key. - 5. Press the P key twice to enter the double quotes (DON'T use the - double quotes got by pressing SHIFT+Q. These are not the same!) - 6. Release the SHIFT key and press the NEW LINE key. - 7. The tape will load and run. - - -3. Using external tapes on DS81 -------------------------------- - - If you are using the version of DS81 that allows the use of FAT devices, - and you device is supported, they you can load any old tape. - - Simply place the .P file (ZX81 games are usually distributed as .P files - that are simply an image of the memory that would have been dumped to tape) - and either put it in the root directory of the FAT device or in a directory - called ZX81SNAP. - - Note that currently hi-resolution games will not work. For that matter, - it can't be at all guaranteed that all original ZX81 games will work as - expected. After all, DS81 isn't really a ZX81. - - -------------------------------------------------------------------------------- -$Id$ - - vim:expandtab:spell |