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apple1.woz
Executable for Isetta. It switches from Z80 to 6502 instructions and runs the original Apple 1 BASIC.
woz -
9.66 kB -
07/11/2024 at 20:54
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microcode bin 240711A.txt
plain -
896.01 kB -
07/11/2024 at 20:13
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tge bin 240622A.txt
The Great Escape, Isetta executable for this ZX Spectrum game.
plain -
135.01 kB -
06/22/2024 at 07:11
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mm.z80
Manic Miner, original source code for this ZX Spectrum game.
z80 -
345.95 kB -
06/09/2024 at 09:47
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zx_video.z80
Assembly program for initializing the ZX Spectrum screen mode on Isetta.
z80 -
5.49 kB -
06/07/2024 at 19:40
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Download
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altair8.bin
The original Microsoft 4k Altair BASIC, with small changes in I/O to run on Isetta.
octet-stream -
8.99 kB -
06/02/2024 at 19:39
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Download
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isetta-bu12-240531.py3
py3 -
48.82 kB -
06/01/2024 at 20:06
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Download
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boot 240601.z80
z80 -
101.11 kB -
06/01/2024 at 20:06
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microcode bin 240529.txt
plain -
896.01 kB -
05/29/2024 at 19:05
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loader 240526.bin
This is included in the microcode. The microcode will copy this to main RAM and start executing. The loader fetches "boot.bin" from serial flash and executes it. The loader can also fetch a file from the Raspberry Pi and start executing it. It has a few more functions.
octet-stream -
5.96 kB -
05/26/2024 at 16:39
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Download
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loader 240526.z80
z80 -
84.10 kB -
05/26/2024 at 16:39
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isetta RPi 240511.py3
Raspberry Pi Python3 program, to program the microcode flash chips, and to provide character I/O for Isetta. Also provides file transfer to Isetta.
py3 -
47.81 kB -
05/11/2024 at 19:14
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Download
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Isetta Z80 instruction cycles.pdf
Number of cycles for each instruction, compared to the number of the classic Z80
Adobe Portable Document Format -
114.83 kB -
05/03/2024 at 09:49
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Preview
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Isetta 6502 instruction cycles.pdf
Number of cycles for each instruction, compared to the number of the classic 6502
Adobe Portable Document Format -
91.32 kB -
05/03/2024 at 09:48
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Preview
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generated microcode 240419.txt
Readable microcode for 6502, Z80, Isetta reset and device drivers.
plain -
347.98 kB -
04/20/2024 at 09:52
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Download
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isetta milestone 240419
Raspberry Pi Python3 program, to program the microcode flash chips, and to provide character I/O for Isetta. Milestone 240419 is the first time Apple basic runs on Isetta hardware (using RPi for character I/O).
isetta milestone 240419 -
36.50 kB -
04/19/2024 at 17:30
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Download
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microcode bin 240419B.txt
Binary (hex format) version of microcode
plain -
896.01 kB -
04/19/2024 at 15:22
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Download
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Isetta 20231204.pdf
Schematic (not fully up-to-date)
Adobe Portable Document Format -
3.16 MB -
12/04/2023 at 19:42
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Preview
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generated microcode 230725.txt
Current microcode for 6502 and Z80
plain -
256.34 kB -
07/25/2023 at 20:36
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Download
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Isetta 20230610.pdf
First version of schematic.
Adobe Portable Document Format -
2.17 MB -
06/11/2023 at 13:31
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Preview
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microcode 230421_new.txt
First version of 6502 microcode generator.
plain -
39.04 kB -
04/21/2023 at 20:55
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Download
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roelh