Virgil Dupras
3ea221d0eb
z80: inline all uses of pushRS/popRS
...
I'm trying to move stuff around and it simplifies things. Will make
a lot more sense to inline when BC replaces IY.
2020-07-05 21:54:01 -04:00
Virgil Dupras
ebf47a2ab5
Fix broken LIT"
2020-07-05 20:50:08 -04:00
Virgil Dupras
8bb9230f49
z80a: make PUSH* macros use DE instead of BC
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This is in preparation of using BC instead of IY for IP. I've
verified all PUSH* usage and none was problematic.
2020-07-05 17:36:31 -04:00
Virgil Dupras
f2f520cacc
Extract (br), (?br) and (loop)'s code out of stable ABI zone
...
There is now no more actual code in stable ABI, only references.
This makes refactoring of this code much easier. For example,
changing IY to BC as the IP register.
2020-07-05 14:57:18 -04:00
Virgil Dupras
daeb3b3c69
Extract (n) code from stable ABI
2020-07-05 14:16:24 -04:00
Virgil Dupras
a2f880b145
z80: remove popRS from stable ABI
2020-07-05 13:44:38 -04:00
Virgil Dupras
5705cd5c31
Extract EXIT code from stable ABI zone
2020-07-05 13:41:12 -04:00
Virgil Dupras
84202da6a6
z80: prettify
2020-07-05 13:15:26 -04:00
Virgil Dupras
4a91ee5c9c
Extract (s) code from stable ABI zone
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Only its jump addr remains.
2020-07-05 08:54:22 -04:00
Virgil Dupras
b626944273
z80: move back R* words to native words section
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This allows us to refer to pushRS/popRS routines by labels, allowing
us to get rid of the pushRS reference in the stable ABI zone.
2020-07-05 08:15:50 -04:00
Virgil Dupras
650481f849
z80/8086: extract 2>R code from stable ABI zone
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Only its jump at 0x33 remains.
I've also fixed a strange offset oddity in 8086's (n) placement.
It was off by 2, but strangely, it ran properly. Anyway, now it's
fixed.
2020-07-05 08:03:15 -04:00
Virgil Dupras
94cb76520a
Refer to stable wordref by direct offset in "hot zone" immediates
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Previously, it was impossible to cross-compile Collapse OS from a
binary-offsetted Collapse OS because stable ABI wordrefs would have
a wrongly offsetted address.
This solves the problem by replacing those wordrefs by direct,
hardcoded stable ABI offset references.
2020-07-05 07:09:11 -04:00
Virgil Dupras
2111f694f6
VE: 'g' becomes 'G' and 'g' selects line
2020-07-04 07:40:12 -04:00
Virgil Dupras
f09aa0603c
rc2014: separate SPI relay and SDC drivers
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My intention is to reuse the SPI relay to program AVR MCUs from a
RC2014.
2020-06-29 18:48:00 -04:00
Virgil Dupras
1ac7038863
avra: add TOC and instructions list
2020-06-29 08:01:39 -04:00
Virgil Dupras
74e211eeda
Fix bugs in ed's U and VE's O/o
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U didn't properly handle inserting on the last line and O's bounds
checks didn't make sense.
2020-06-28 20:34:39 -04:00
Virgil Dupras
5e01e6405a
VE: add @ command
2020-06-28 20:19:42 -04:00
Virgil Dupras
5a2612a9c5
Add HERESTART xcomp config
2020-06-28 19:45:28 -04:00
Virgil Dupras
3068b58be5
Rename RAMSTART to SYSVARS
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It's more descriptive this way. Also, I'll soon add a new HERESTART
config.
2020-06-28 18:49:30 -04:00
Virgil Dupras
9424770caa
rc2014: add a declaration part to ACIA drivers
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Driver configuration don't need their own words at runtime, we only
need to compile them as literals when compiling words.
Now that we have this "declaration blocks" pattern emerging, it
seems like a good idea to take advantage of this in drivers, both
for simplifying the xcomp unit and to make final binary slimmer.
2020-06-28 17:30:01 -04:00
Virgil Dupras
b8800be76f
rc2014: improve SD card driver docs
2020-06-28 16:34:41 -04:00
Virgil Dupras
27025bf141
Slight adjustments to bootstrap docs
2020-06-28 07:42:20 -04:00
Virgil Dupras
5052efb60f
VE: supress ed's output on E and X
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Most of the time, this output would be hidden by the next screen
update, except when editing the last line.
2020-06-28 07:04:08 -04:00
Virgil Dupras
101193a78c
avra: begin writing docs
2020-06-28 06:57:59 -04:00
Virgil Dupras
440ea43a88
z80a: make mnemonic names more uniform across assemblers
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Initially, I used the same letters as those used in the z80 ref
docs, but it makes the different assemblers harder to use than they
should. Having consistent "argtype" rules across assemblers should
help.
2020-06-27 22:01:56 -04:00
Virgil Dupras
1312817117
z80: make boot binary a 2-part process
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Previously, recipes that began spitting binary contents before
loading block 282 would end up with VARIABLE code in their binary,
thus breaking them. We fix this by making this loading process
2-part.
2020-06-26 21:41:17 -04:00
Virgil Dupras
891e4f861a
z80: fix chkPS's "stable ABI" form in binaries with offset
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Before lblnext is set, we need to use BJP, instead of JPnn, for the
jump to work in binaries with offsets.
2020-06-26 21:24:12 -04:00
Virgil Dupras
7eeec67ff5
Add extra words WIPED? and FREEBLKS?
2020-06-23 07:21:33 -04:00
Virgil Dupras
9ab5cda397
ed: rename I to i
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Shadowing core "I" is too messy. As soon as ed is loaded in memory,
nothing else that isn't "i-aware" can be loaded anymore.
I guess that's why "contexts" exist in Starting Forth, but adding
this concept just for allowing the shadowing of core words seems
overkill to me. Renaming I to i in ed seems better.
2020-06-23 07:08:21 -04:00
Virgil Dupras
af339d8c6a
VE: properly make buffer dirty on E and X
2020-06-23 06:53:30 -04:00
Virgil Dupras
2d9a07d215
blkunpack: don't include trailing empty lines
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This was becoming heavy to manage.
2020-06-23 06:52:34 -04:00
Virgil Dupras
94ed01086a
pcat: move drivers and xcomp to blkfs
2020-06-22 14:21:25 -04:00
Virgil Dupras
1bea45acb8
8086a: add PUSHs, and POPs,
2020-06-22 13:54:33 -04:00
Virgil Dupras
d7f002df98
pcat: use boot drive no passed to bootloader through DL
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instead of hardcoded drive 0.
2020-06-21 22:53:11 -04:00
Virgil Dupras
dc7f36263a
pcat: BLK-enabled!
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That INT 13H logic was a bit tricky to implement...
read-only for now.
2020-06-21 22:07:12 -04:00
Virgil Dupras
8d645405b3
pcat: add RSP checks in next
2020-06-21 15:14:38 -04:00
Virgil Dupras
f9eb7c661b
8086asm: fix CMPrr, and CMPxx, argument order
2020-06-21 14:55:14 -04:00
Virgil Dupras
cd514e6cd6
pcat: add PSP checks in all native words
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Also, fix (roll) which wasn't properly implemented.
2020-06-21 14:07:02 -04:00
Virgil Dupras
c2c32bbed8
pcat: properly handle IMMED flag in _find
2020-06-21 13:09:51 -04:00
Virgil Dupras
1b5333d0b4
pcat: move all find code in _find word
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It isn't used by low level boot code anymore, so it can go there.
2020-06-21 11:57:12 -04:00
Virgil Dupras
dbd283758c
Refer to BOOT and (uflw) by addr in stable ABI
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Was previously referred to by name+find, which was wasteful.
2020-06-21 11:41:10 -04:00
Virgil Dupras
dcaa515929
pcat: implement does
2020-06-21 10:40:09 -04:00
link2xt
d83d12899b
MOVE: do not crash when u is 0 ( #126 )
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This commit adds ?DUP IF guards to MOVE and MOVE- that make them exit
when u is 0. Without these guards a DO loop was executed 65535 times
instead of 0.
In particular, this fixes a crash when "105 LOAD I " is executed
immediately after boot. Block editor word "I" passes IBUF length (0)
to MOVE- and MOVE in this case, causing a crash.
2020-06-21 05:49:45 -05:00
Virgil Dupras
99c05fff3c
pcat: it works!
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Forth intepreter now works! There's still DOES> and overflow checks
to implement, but otherwise, we have it!
2020-06-20 20:06:42 -04:00
Virgil Dupras
ae719508d9
pcat: make /MOD division 16-bit
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Was required for the many "256 /MOD" in the code.
2020-06-20 19:14:51 -04:00
Virgil Dupras
60ecab314e
pcat: we have PROMPT!
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Not working, but we do get that sweet "CollapseOS".
2020-06-20 16:58:48 -04:00
Virgil Dupras
397ee3e3e6
Simplify word '
2020-06-20 14:13:41 -04:00
Virgil Dupras
1536434666
pcat: implement cell execution and shaping things up
2020-06-20 13:50:01 -04:00
Virgil Dupras
acf8e03f53
8086asm: add overflow check to RPCs,
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I've spent way too much time debugging bugs caused by this...
*sigh*, why can't I learn?
2020-06-20 13:36:21 -04:00
Virgil Dupras
019fd8a67d
pcat: fix ?DUP
2020-06-20 07:34:46 -04:00