Another Old VCR Heartwarming Moment!
Copyright (C) 2024 Cameron Kaiser.
All rights reserved.
BSD 3-clause license.
This is a sample demonstration of a character I/O package for the Tomy Tutor written in TMS 9900/9995 assembly language. It features a character set organized to match true ASCII, so you can read and write ASCII characters directly to and from VDP memory; full support (with its own modified font) for 40 column text; and a full N-key rollover input routine that can finally keep up with your typing. See the blog post for more details on its construction and use.
To build a simple ROM cartridge file you can run in something like MAME, all you need is the assembler and p2bin tool from the Macroassembler AS. Type either make tello.rom or make tello40.rom to make the 32-column or 40-column version respectively. The fonts are the two .bin files and can be changed with any character set editor. If you intend to use something like Ultrafont+ to edit them on a Commodore 64, remember to add a two byte starting address (for Ultrafont+, use 00 70) and remove it when you're done.
To build and run in MAME, try make run or make run40. By default, this will execute mame tutor -skip_gameinfo -cart tello.rom or tello40.rom, as appropriate.
If you have a TeamEurope or compatible flashcart image stored as tutor.bin in your home directory and an SST39SF040 512K flash ROM in your minipro-compatible programmer, you can make burn to splice it into the flashcart image at offset 0x70000 through 0x78000 and update the flash ROM. The minipro utility is required. I recommend using an older burner like the TL866-II+ for compatibility since the newer T48 and T56 units may not be fully supported. WARNING! I am not responsible for you burning crap to your multicart ROM!
... unless you intend to fix them yourself. Feature requests without code will be closed and probably deleted. Refactors to your favourite assembler will be ignored; fork the project and make me proud.
Copyright (C) 2024 Cameron Kaiser. All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.
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