I broke my 400 (again) and have recently fixed it (again).
Basically, the symptoms were that BASIC did not work (tried 3 different carts, same problem, everything else worked fine). Anyway, the problem turned out to be that the FP ROM was burned out from one of my useless expirements where I must have plugged it in backwards or something. I replaced it with a 27C128 and had to mount a chip dead-bug style (ugh).
But here is my question: due to the way I mapped the ROM, I now have 4K of ROM mapped in $C000-CFFF. What are your ideas for how to use this space? Here are my (and others) ideas so far:
Basically, the symptoms were that BASIC did not work (tried 3 different carts, same problem, everything else worked fine). Anyway, the problem turned out to be that the FP ROM was burned out from one of my useless expirements where I must have plugged it in backwards or something. I replaced it with a 27C128 and had to mount a chip dead-bug style (ugh).
But here is my question: due to the way I mapped the ROM, I now have 4K of ROM mapped in $C000-CFFF. What are your ideas for how to use this space? Here are my (and others) ideas so far:
- a small 4K or less game, relocated to run there
- commonly used small utilities like the 850 handler loader.
- additional fonts, like the XL/XE international set and others
- some other 4th thing I can't remember right now, but I will edit if I remember what it was