roelh|
z80 - 38.46 kB - 05/04/2024 at 15:11 |
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Isetta Z80 instruction cycles.pdfNumber of cycles for each instruction, compared to the number of the classic Z80Adobe Portable Document Format - 114.83 kB - 05/03/2024 at 09:49 |
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Isetta 6502 instruction cycles.pdfNumber of cycles for each instruction, compared to the number of the classic 6502Adobe Portable Document Format - 91.32 kB - 05/03/2024 at 09:48 |
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z80 - 31.82 kB - 05/02/2024 at 17:28 |
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plain - 896.01 kB - 04/29/2024 at 18:03 |
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plain - 896.01 kB - 04/27/2024 at 20:46 |
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loader.z80This is included in the microcode. The microcode will copy this to main RAM and start executing. The loader can fetch a file from the Raspberry Pi and start executing it. It has a few more functions. It's not finished yet. Version 240427.z80 - 9.13 kB - 04/27/2024 at 09:33 |
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generated microcode 240419.txtReadable microcode for 6502, Z80, Isetta reset and device drivers.plain - 347.98 kB - 04/20/2024 at 09:52 |
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isetta milestone 240419Raspberry Pi Python3 program, to program the microcode flash chips, and to provide character I/O for Isettaisetta milestone 240419 - 36.50 kB - 04/19/2024 at 17:30 |
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microcode bin 240419B.txtBinary (hex format) version of microcodeplain - 896.01 kB - 04/19/2024 at 15:22 |
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isettaCurrent state of the RPi program 31-3-2024isetta - 26.81 kB - 03/31/2024 at 08:55 |
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Isetta 20231204.pdfSchematic (not fully up-to-date)Adobe Portable Document Format - 3.16 MB - 12/04/2023 at 19:42 |
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generated microcode 230725.txtCurrent microcode for 6502 and Z80plain - 256.34 kB - 07/25/2023 at 20:36 |
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Isetta 20230610.pdfFirst version of schematic.Adobe Portable Document Format - 2.17 MB - 06/11/2023 at 13:31 |
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microcode 230421_new.txtFirst version of 6502 microcode generator.plain - 39.04 kB - 04/21/2023 at 20:55 |
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Isetta TTL computer
Retro computer built from TTL, with 6502 and Z80 instruction set. Includes video system.