Files | W65C02SXB investigation

Mini65-hacked.a65.txt

Mini65 source code hacked to use the USB port of the W65C02SXB. Not tested yet! Intention is to read an input bit, to control whether to boot into TIDE or BBC BASIC.
I need to think how to switch the NMI and IRQ code between the two systems.

plain - 11.94 kB - 02/18/2024 at 22:48

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Mini65-hacked.a65.lst.txt

Fortunately the modified code still fits inside 512 bytes!

plain - 38.48 kB - 02/18/2024 at 22:48

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Mini65.a65.txt

J.G. Harston's minimalist 6502 MOS modified to conventional assembler syntax. Assembles online and verified against known-good ROM image.

text/plain - 9.65 kB - 11/17/2021 at 21:07

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Mini65.a65.lst.txt

Mini65.a65.txt output listing.

text/plain - 33.73 kB - 11/17/2021 at 21:07

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WDC65c02SK_v2-0-4-3_2013-07-02.info.txt

Rough disassembly information file

plain - 7.45 kB - 11/07/2021 at 14:56

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WDC65c02SK_v2-0-4-3_2013-07-02.s.txt

Rough disassembly of 65C02 based board.

plain - 200.51 kB - 11/07/2021 at 14:56

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Acorn_6502_HiBasic3.bin

6502 BBC BASIC, starts at B800.

octet-stream - 16.00 kB - 11/15/2021 at 04:47

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Acorn_201_606_ROM_ca65.txt

Acorn 6502 coprocessor 2K firmware source code.
Communicates over Tube. This could be modified for the W6502SXB board.

plain - 35.17 kB - 11/15/2021 at 04:25

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Acorn_201_606_ROM_ca65.lst.txt

Acorn 6502 coprocessor 2K firmware listing.

plain - 85.83 kB - 11/15/2021 at 12:08

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Atom_BBC_BASIC_OS.rom

This OS for the Atom BBC BASIC conversion card is 4K, which is too big for HiBASIC. Serves as a known-good reference for checking that any source-code recreations can generate the original code.

rom - 4.00 kB - 11/15/2021 at 12:42

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BBCMOS1.src.txt

Source code for the Atom BBC BASIC OS ROM, by J.G. Harston who says there are many errors. The source syntax is that of the BBC BASIC assembler, and the label names describe their address but not their function.

plain - 80.40 kB - 11/15/2021 at 14:20

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Atom_BBC_BASIC_OS_src.txt

Source code for the Atom BBC BASIC OS ROM, by J.G. Harston, modified for online assembly at asm80.com and with more explanatory variable/function names.

plain - 64.19 kB - 11/16/2021 at 03:50

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Mini65-hacked.a65.txt Mini65 source code hacked to use the USB port of the W65C02SXB. Not tested yet! Intention is to read an input bit, to control whether to boot into TIDE or BBC BASIC. I need to think how to switch the NMI and IRQ code between the two systems. plain - 11.94 kB - 02/18/2024 at 22:48		Download
Mini65-hacked.a65.lst.txt Fortunately the modified code still fits inside 512 bytes! plain - 38.48 kB - 02/18/2024 at 22:48		Download
Mini65.a65.txt J.G. Harston's minimalist 6502 MOS modified to conventional assembler syntax. Assembles online and verified against known-good ROM image. text/plain - 9.65 kB - 11/17/2021 at 21:07		Download
Mini65.a65.lst.txt Mini65.a65.txt output listing. text/plain - 33.73 kB - 11/17/2021 at 21:07		Download
WDC65c02SK_v2-0-4-3_2013-07-02.info.txt Rough disassembly information file plain - 7.45 kB - 11/07/2021 at 14:56		Download
WDC65c02SK_v2-0-4-3_2013-07-02.s.txt Rough disassembly of 65C02 based board. plain - 200.51 kB - 11/07/2021 at 14:56		Download
Acorn_6502_HiBasic3.bin 6502 BBC BASIC, starts at B800. octet-stream - 16.00 kB - 11/15/2021 at 04:47		Download
Acorn_201_606_ROM_ca65.txt Acorn 6502 coprocessor 2K firmware source code. Communicates over Tube. This could be modified for the W6502SXB board. plain - 35.17 kB - 11/15/2021 at 04:25		Download
Acorn_201_606_ROM_ca65.lst.txt Acorn 6502 coprocessor 2K firmware listing. plain - 85.83 kB - 11/15/2021 at 12:08		Download
Atom_BBC_BASIC_OS.rom This OS for the Atom BBC BASIC conversion card is 4K, which is too big for HiBASIC. Serves as a known-good reference for checking that any source-code recreations can generate the original code. rom - 4.00 kB - 11/15/2021 at 12:42		Download
BBCMOS1.src.txt Source code for the Atom BBC BASIC OS ROM, by J.G. Harston who says there are many errors. The source syntax is that of the BBC BASIC assembler, and the label names describe their address but not their function. plain - 80.40 kB - 11/15/2021 at 14:20		Download
Atom_BBC_BASIC_OS_src.txt Source code for the Atom BBC BASIC OS ROM, by J.G. Harston, modified for online assembly at asm80.com and with more explanatory variable/function names. plain - 64.19 kB - 11/16/2021 at 03:50		Download