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Author SHA1 Message Date
Virgil Dupras
2e8af376e3 pgm: new kernel module 
The pgm module implements a shell hook so that when an unknown command
is typed, we look into the mounted filesystem and look for a file with
the same name as the command. If we find one, we load it in memory and
run it.
 2019-05-31 14:54:15 -04:00
Virgil Dupras
7c191fd978 fs: standardize file handle routine argument to IX 
Using HL/DE was awkward and error-prone.
 2019-05-31 14:28:06 -04:00
Virgil Dupras
83771b538f fs: check for file size bounds in GetC 2019-05-31 11:12:29 -04:00
Virgil Dupras
a641a94853 sdc: make sector swapping more robust 
It would previously only work when GetC-ing our way into a new sector.
Seeking into one would not work. Now it's much more robust and this
paves the way for write support.
 2019-05-30 14:55:38 -04:00
Virgil Dupras
cdc865f8c6 tools/emul/shell: add debug output 2019-05-30 14:55:16 -04:00
Virgil Dupras
83e375936c shell: make seek cmd init DE to 0 
So that blkdev not supporting 32-bit aren't messed up.
 2019-05-30 14:54:28 -04:00
Virgil Dupras
6403ab1acf zasm: add support for SRL r 2019-05-30 14:46:25 -04:00
Virgil Dupras
328f44814e Make blockdev pointers 32 bits 
This allows us to break through the 64K limit for includes CFS in zasm,
a limit we were dangerously close to breaking. In fact, this commit
makes us go over that limit. Right in time!
 2019-05-28 19:42:35 -04:00
Virgil Dupras
6b1679c811 recipes/rc2014/sdcard: mount filesystem! 2019-05-28 13:13:34 -04:00
Virgil Dupras
312e95479e sdc: fix bug preventing us from reading beyond first sector 2019-05-28 13:12:08 -04:00
Virgil Dupras
8cfe834edb recipes/rc2014/sdcard: use "sdci" and blockdev rather than user prog 2019-05-28 11:01:17 -04:00
Virgil Dupras
2c80924df9 zasm: indicate include lineno in errors 2019-05-28 09:57:29 -04:00
Virgil Dupras
8def8e7c38 zasm: add lineno to error reports 
For now, top-level only
 2019-05-27 20:52:40 -04:00
Virgil Dupras
e414e600ea zasm: add ERR_DUPSYM and ERR_OOM error conditions 2019-05-27 17:45:05 -04:00
Virgil Dupras
b298e607bd zasm: implement error conditions for #inc 2019-05-27 14:21:46 -04:00
Virgil Dupras
31f7c7771d zasm: implement error conditions in .org and .fill 2019-05-27 14:16:40 -04:00
Virgil Dupras
371076190f zasm: implement error conditions in .equ 2019-05-27 14:07:07 -04:00
Virgil Dupras
436ff51c39 zasm: implement error conditions in .dw 2019-05-27 13:52:58 -04:00
Virgil Dupras
f5d4321ece zasm: implement error conditions in .db 2019-05-27 13:44:53 -04:00
Virgil Dupras
d76dd54f4b zasm: add ERR_OVFL 2019-05-27 12:12:21 -04:00
Virgil Dupras
f9118ef88e xasm: expand ERR_BAD_ARG condition 2019-05-27 12:05:42 -04:00
Virgil Dupras
e1e6d52fea zasm: add ERR_BAD_FMT 2019-05-27 11:58:12 -04:00
Virgil Dupras
412b3f374a zasm: add ERR_BAD_ARG 2019-05-27 11:22:38 -04:00
Virgil Dupras
af2c561c6b zasm: begin erroring out reliably 
Up until now, invalid source input had undefined behavior. We're now
beginning to define that behavior so that zasm can be a bit more usable.
 2019-05-27 11:04:31 -04:00
Virgil Dupras
976a93971c zasm: improve docs 2019-05-27 10:38:29 -04:00
Virgil Dupras
8923fefeff Update docs 2019-05-20 12:11:45 -04:00
Virgil Dupras
ed19c6afc1 Use zasm in recipes 2019-05-20 11:00:14 -04:00
Virgil Dupras
c40bc329d5 zasm: fix expr returning wrong values on first pass 
To run a parseExpr on first pass would always return a false success
with dummy value because symbols are configured to always succeed on
first pass. This would make expressions like ".fill 0x38-$" so bad
things to labels because "0x38-$" wouldn't return the same thing on
first and second pass.

Revert to parsing literals and symbols after having scanned for
expressions and add a special case specifically for char literals (which
is why we scanned for literals and symbols first in the first place).
 2019-05-20 10:46:27 -04:00
Virgil Dupras
e18f9b53a9 zasm: add support for "$" symbol 
Allows for the ".fill x-$" pattern.
 2019-05-20 09:17:50 -04:00
Virgil Dupras
207adbc2f8 tools/emul: add "make rescue" command 2019-05-20 08:58:53 -04:00
Virgil Dupras
848a7500bc zasm: add support for .fill directive 2019-05-20 08:39:53 -04:00
Virgil Dupras
ae315499cb Run unit tests with zasm 2019-05-20 07:50:23 -04:00
Virgil Dupras
d2c6e21c64 Fix broken shell 
When I zasm-ified the shell a couple of dozens of commits ago, I
inverted push and pops...
 2019-05-20 07:38:15 -04:00
Virgil Dupras
c586c0d63c Make the shell emulator be built by zasm 2019-05-20 07:29:19 -04:00
Virgil Dupras
fa3b86a5c1 zasm now bootstraps itself without scas! 2019-05-19 20:44:19 -04:00
Virgil Dupras
acddb045a5 zasm: add support for .org directive 2019-05-19 14:40:42 -04:00
Virgil Dupras
49be50b730 zasm now self-assembles! 2019-05-19 13:00:52 -04:00
Virgil Dupras
bc1496a7e3 zasm emul: bring back kernel/user distinction 
It was a bad idea to remove it. Now that I'm introducing the concept of
a per-app glue file, it becomes much easier to build emulated zasm as a
userspace app.
 2019-05-19 12:57:59 -04:00
Virgil Dupras
7fad3b0c90 Move /parts/z80 to /kernel 
Let go of that "meta os" thing. it's not as meta as I made it sound
like. It's a kernel.
 2019-05-19 11:19:41 -04:00
Virgil Dupras
78d9764005 zasm: can now assemble zasm/expr.asm! 2019-05-19 10:45:11 -04:00
Virgil Dupras
6cbce0533a zasm: can now assemble zasm/instr.asm! 2019-05-19 10:40:45 -04:00
Virgil Dupras
ea8477bb91 zasm: accept whitespaces before separating comma 2019-05-19 10:39:29 -04:00
Virgil Dupras
3b1ef2b9af zasm: bump global symbol limit to 0x200 2019-05-19 09:54:42 -04:00
Virgil Dupras
44abc79850 zasm: add support for SBC HL, ss 2019-05-19 09:54:02 -04:00
Virgil Dupras
d9fff16157 zasm emul: get rid of the kernel/user distinction 
Made things complicated for nothing.
 2019-05-19 09:14:40 -04:00
Virgil Dupras
98695f9912 zasm: de-index symRegister 
Make symRegister's logic pointer-based so we can break through the 0x100
limit.
 2019-05-19 09:06:24 -04:00
Virgil Dupras
c01816b055 zasm: make instr a bit more zasm-friendly 
But we're still at a certain distance from assembling it with zasm:
we're busting the 0x100 symbol limit.
 2019-05-18 21:07:35 -04:00
Virgil Dupras
bccf933ea9 zasm: try for regular number or symbol before parsing expr 
Previously, we would mess up literals like '-'.
 2019-05-18 21:06:31 -04:00
Virgil Dupras
723497af69 zasm: can now assemble zasm/directive.asm! 2019-05-18 20:37:34 -04:00
Virgil Dupras
9f6ebf538d zasm: can assemble zasm/tok.asm! 2019-05-18 20:31:52 -04:00