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Its been a while since I did the research, but iirc the browser-based emulator used for Commodore 64 development also supports the VIC 20. I'm not sure how difficult this addition would be or what ass…
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The video data pointed at by the emulator's video scanner is 4 cycles (or 8x 80-column characters) ahead of where it should be.
Try the end credits of French Touch's "Ansi Story":
http://www.ctrl-pom…
tomcw updated
5 years ago
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Hi,
I just ported your great little emu to a [very unlikely architecture](https://github.com/onnokort/semu-c64/) and whilst doing so, I had to tweak the MMU code to go through the RAM access method…
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The C64, Apple2, and C128 targets need faster routines.
You can see an example of accelerated text output in:
https://github.com/tschak909/platoterm64/blob/master/src/atari/fast_text.s
can some…
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BitsyBoot only beeps when attempting to boot from slot on pre-//e machine.
BUG
ProDOS 2.4
## Description
Because the open-Apple key is wired into the game port, machines without that key …
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I set up jaguar-sdk with msys2. Got everything copied into the Jaguar-sdk folder. gcc already was installed.
When I type makefile, this is what I get:
`./make: line 1: JAGSDK: command not found
./…
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Currently the CPU2 bits define the 6502 variant, if CPU=0.
For CPU=1 no further definition is given for CPU2.
I want to clarify this like so:
```
CPU2 combinations for CPU=1:
%0000 : 6…
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Some architectures, such as Atmel AVR, have separate address spaces (in the AVR case, there is a "flash" address space for program code and a "ram" address space for data). For example, this is valid …
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Sorry to bother you again. This time, I have tested DIVU and DIVS and encountered an issue with the N flag.
Test cases divu5:
https://github.com/dirkwhoffmann/vAmigaTS/tree/master/CPU/DIV/divu5
…
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https://www.c64-wiki.com/wiki/Expansion_Port
https://rr.pokefinder.org/rrwiki/images/9/90/1750_1764_Service_Schematics.pdf
Afaik _ROML/_ROMH are just address decode helpers to ease cartridge devel…