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V8502 - Replacement for a 8502 with a 6502

Copyright (c) 2024 Vossi - v.1

www.mos6502.net

License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. See https://creativecommons.org/licenses/by-sa/4.0/.

v.1 initial (base is V6510 v.3)

Schematic

Parts

CPLD-Firmware: The .JED file can be uploaded with a JTAG-SMT2 Xilinx programmer (China) and xc3sprog

BEWARE: I got good CPLD's from China, but there are some XC9572XL FAKES out there!

V8502

Tested successfully with a UMC 6502A in my C128 & C128D-CR::

  • Risen from the Oblivion VIC
  • Risen from the Oblivion VDC
  • CPM VIC mode
  • CPM VDC 80 column mode
  • GEOS VIC mode with REU 1764, Mouse
  • GEOS VDC mode with REU 1764, Mouse
  • C128 Diagnostic cartridge
  • Elite 128
  • Sonic with REU 1764 c64 mode
  • Galaxian cartridge C64 mode
  • Blue Max from disk C64 mode
  • Basic lesson loaded from tape
  • SD2IEC with FB64 & FB128

For a WDC 65C02 you have to cut the small trace in the other solder jumper.

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V8502 - Replacement for a 8502 with a 6502

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