Commit Graph

7 Commits

Author SHA1 Message Date
Virgil Dupras
31a58d00f1 z80: fix tricky memory initialization issue
Among random "better safe than sorry" changes, the real fix is in
changing "4" for "5" above _find declaration. This off-by-one error
had that word, which is the root word in z80, have a 0x01 prev field
instead of a 0x00 one.

When all memory was initialized to zero, it didn't matter, we ended
up hitting 0 prev and considered ourselves properly at the end of
dict.

When memory wasn't initialized, however, we would end up jumping at
all kinds of places, leading to random behavior.
2020-08-15 16:37:58 -04:00
Virgil Dupras
2d9a07d215 blkunpack: don't include trailing empty lines
This was becoming heavy to manage.
2020-06-23 06:52:34 -04:00
Virgil Dupras
f6ded7712e VE: add 't'
This is the first commit I do entirely in VE. It's a habit I'm planning
on taking as it helps a lot to find usability issues.
2020-06-11 18:12:01 -04:00
Virgil Dupras
bf289b0a67 z80a: de-variable-ize
Use straight VARIABLE instead of Z80MEM+. Initially, I used this
system to allow z80a to be embedded in a system binary, but now
I don't think it's worth it. Compiled, z80a is 2.5k. Sure, it's a
sizeable amount of RAM, but I think that even with it in RAM, I'll
manage a bootstrap within my most constrained machine, the SMS with
8K.
2020-05-14 15:29:22 -04:00
Virgil Dupras
ecca70c7f3 Add layer of indirection to EMIT
This would allow things like temporary giving control to the *CL
line on the TRS-80. For example... A very far fetched example. Not
at all the only *raison d'etre* of the layer...
2020-05-01 20:05:15 -04:00
Virgil Dupras
295b4b6e0a z80a: add BIN( parameter
Will be useful for assembling binaries for the TRS-80 which can't start
at addr 0.
2020-04-27 15:11:38 -04:00
Virgil Dupras
0892193cbe Copy z80a.fs to disk blocks
I don't remove z80a.fs yet because build process needs it, but that
will change shortly.
2020-04-19 20:36:13 -04:00