Commit Graph

10 Commits

Author SHA1 Message Date
Virgil Dupras
5219887ad7 sdc: implement _crc16 in z80 2020-04-24 20:46:01 -04:00
Virgil Dupras
8d78ca9dac tests: add test_sdc
The SD card driver is a bit too slow to be bearable. I'll write
_crc16 in z80 and see how it goes.
2020-04-24 18:23:29 -04:00
Virgil Dupras
1bd191e86a Move /emul/forth/* to /emul
Less noisy this way
2020-04-24 17:53:58 -04:00
Virgil Dupras
5067d40e3b Add CASE..OF words 2020-04-16 15:07:31 -04:00
Virgil Dupras
22f132094a Clarify signed-ness
And fix broken negative display in ".".
2020-04-15 12:29:47 -04:00
Virgil Dupras
400f0ab0b0 boot: fix flagsToBC
Why did I ever think that using CM was a good idea? any comparison
with numbers more than 0x8000 apart would be wrong...
2020-04-07 11:26:37 -04:00
Virgil Dupras
67d732c4be cmp: add tests 2020-04-05 19:52:12 -04:00
Virgil Dupras
48078d9c9c forth: Replace "SKIP?" with "(?br)"
There is an alternate git history where I continued the Forth-ification of
words, including "SKIP?", but that was a bad idea: because that word was
written by flow control immediates, I stepped into quicksands where stability
became necessary in z80c.fs and I couldn't gracefully get out of it.

I'm stepping back and take this opportunity to replace the shoddy SKIP? algo
with a more straightforward (?br) implementation.

(br) and (?br) will always stay in boot code where it's easier manage a stable
ABI.
2020-03-29 09:10:23 -04:00
Virgil Dupras
af5a97243a forth: implement "0b" number parsing 2020-03-19 16:03:35 -04:00
Virgil Dupras
f0cbda1f2e tests: add Forth tests
Modest first step
2020-03-19 15:43:48 -04:00