Apple II Plus Lowercase Character Set Support #29
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Contains Videx Lowercase ROM characters for the II+
… and new cmake variant for IIPLUSLC. Updated Readme.MD with instructions for building firmware using cmake variant created (IIPLUSLC). Tested and working.
… the AppleIIVGAUTIL.dsk file and will start when the disk is loaded. Write it to a physical disk using ADTPro, or another similar utility, or by selecting it using a floppy emulator such as FloppyEMU. The Applesoft BASIC code listing is contained within the source folder.
markadev
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Jan 1, 2024
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markadev
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Thanks for the contribution! This looks good but could you remove the .dsk file from the PR? I will upload it under the github "Releases" section along with the other files.
…p.bas in the AppleIIVGAUTIL.dsk file and will start when the disk is loaded. Write it to a physical disk using ADTPro, or another similar utility, or by selecting it using a floppy emulator such as FloppyEMU. The Applesoft BASIC code listing is contained within the source folder." This reverts commit e14c73c.
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Thanks, Mark, and sounds good! I've reverted the commit that added the disks folder. |
markadev
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Jan 1, 2024
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I used the dump_character_rom Python script to dump the contents of the Videx Lowercase ROM and moved those into the file textfont_iipluslc.c. I added a cmake variant called IIPLUSLC and changed the render_text.c #ifdef for APPLE_MODEL_IIPLUS to #if defined APPLE_MODEL_IIPLUS || defined APPLE_MODEL_IIPLUSLC. I updated the Readme.MD to include a block with build instructions for the alternative LC variant. I have tested creating both a IIPLUS and the new IIPLUSLC builds and firmware was created successfully and seems to function. I'm including a picture showing lowercase displayed on both the II+ with the ROM and the Apple II VGA board. The included image shows the results using a simple basic script meant to show available characters in the character generator (Please note that there is a difference in the tilde and braces displayed on both in the image, but I'm actually using an off-brand ROM on my board and preferred the ones from the original Videx LC ROM).
ROM contents source: https://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Interface%20Cards/80%20Column%20Cards/Videx%20Videoterm/ROM%20Images/
Manual for original lowercase chip:
https://ia800707.us.archive.org/21/items/videx_lower_case_chip/videx_lower_case_chip.pdf