Commit Graph

3 Commits

Author SHA1 Message Date
Bobbi Webber-Manners
aa819ef166
v0.72: Extended memory support for Apple //e
- Implemented initial version of extended memory support, which allows the EightBall source code to be stored in aux RAM (extended 80 column card).  Once an apparent bug in the cc65 extended memory driver is fixed then bytecode will also be stored in aux RAM.
- Moved non-performance critical portions of interpreter / compiler to Apple II language card memory, which frees up more main memory.
- Improvements to display of free memory (`free` command)
2018-05-27 00:13:48 -04:00
Bobbi Webber-Manners
6b6c7e7a70
v0.71: disassembler on 6502, VIC20 workaround
- Added `disass` to VIC20, C64, Apple II builds.
- Workaround for broken getln() call on VIC20.
2018-05-21 23:01:23 -04:00
Bobbi Webber-Manners
6dbf45c39c
v0.70: disassembler, immediate mode VM ops
- VM now prompts for filename to load bytecode from
- Added new EightBall disassembler (`disass`), removed disassembly printout from compiler
- Fixes to interpreter / compiler error reporting.  Should no longer report completely incorrect line numbers!
- Added new immediate mode VM instructions for load (`LDAWI`, `LDABI`, `LDRWI`, `LDRBI`), store (`STAWI`, `STABI`, `STRWI`, `STRBI`), and flow control (`JSRI`, `JMPI`, `BRCI`).  Modified compiler to use these new instructions.  This significantly improves code density and VM execution speed.
2018-05-21 13:58:41 -04:00