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Author SHA1 Message Date
Virgil Dupras
c2d84563dd zasm: allow duplicate const definition 
This will allow interesting override scenarios, adding flexibility.
 2019-07-23 16:01:23 -04:00
Virgil Dupras
ffa28195b1 recipes/sms/romasm: adjust glue to zasm changes 
Forward reference of SHELL_MEM_PTR wasn't working (nor should it
have been...).
 2019-07-23 15:42:52 -04:00
Virgil Dupras
1dec33e02a zasm: make symbol registry a bit more straightforward 
Instead of strings of variable length driving the iteration of the
registry, we do so through records that keep track of lengths and
counts.
 2019-07-23 15:21:42 -04:00
Virgil Dupras
02c7eb0161 zasm: clarify strlen's API 2019-07-23 14:59:38 -04:00
Virgil Dupras
cc7a4bae58 zasm: improve .equ duplicate detection handling 
Things are a bit more straightforward now.
 2019-07-23 14:00:01 -04:00
Virgil Dupras
9ea72dc1d0 zasm: add separate symbol registry for constants 
This will allow me to make the ".org" treatment a bit less murky.
 2019-07-23 13:59:55 -04:00
Virgil Dupras
cdb206b7a5 zasm: fix nasty (iy+d) misparsing bug 
*sob*...
 2019-07-23 13:58:18 -04:00
Virgil Dupras
b95f4c8c24 zasm: remove SYM_CTX_PTR 2019-07-22 16:34:40 -04:00
Virgil Dupras
f4f91ebd79 zasm: remove SYM_CTX 2019-07-22 16:13:00 -04:00
Virgil Dupras
311d04e9aa zasm: make symbol registry easily parametrizable 
I'm about to split the global registry in two (labels and consts)
and the previous state of registry selection made things murky.
Now it's much better.
 2019-07-22 15:13:09 -04:00
Virgil Dupras
518f12b07f sms/vdp: clear 2 lines forward when doing LF 
It allows to see much more easily where the action happens on the screen.
 2019-07-22 11:03:44 -04:00
Virgil Dupras
87d794d426 recipes/sms/romasm: adjust ed/zasm offsets 2019-07-22 10:11:59 -04:00
Virgil Dupras
0237ff105f ed: fix 'd' going crazy when deleting last lines of buf 2019-07-21 19:43:45 -04:00
Virgil Dupras
0fd16a0bb6 ed: fix boken 'a' and 'd' cmds 2019-07-21 19:32:24 -04:00
Virgil Dupras
f43241a5a0 kbd: support shifted characters 2019-07-21 17:30:50 -04:00
Virgil Dupras
52e5f5b5bf kbd: simplify code 2019-07-21 16:58:16 -04:00
Virgil Dupras
77d805ea0f shell: allow cmds to be shorter than 4 chars 2019-07-21 15:57:55 -04:00
Virgil Dupras
70a42e8c4d recipes/sms/romasm: first steps 2019-07-21 15:37:03 -04:00
Virgil Dupras
421d881fae ed: allow inserting in empty file 2019-07-21 15:06:03 -04:00
Virgil Dupras
34f499184d zasm: add ".bin" directive 
Also, remove zasm/test7 because it changes too much all time time
(whenever zasm changes) and isn't precise enough. Too much noise,
not worth it.
 2019-07-21 12:58:02 -04:00
Virgil Dupras
01031a780a ed: Add 'w' command 2019-07-21 11:40:26 -04:00
Virgil Dupras
f6479486f2 ed: allow appending at the end of the file 2019-07-21 11:12:49 -04:00
Virgil Dupras
8d7abd9994 ed: fix broken buf insert logic 2019-07-21 10:53:11 -04:00
Virgil Dupras
1a5a1b9861 ed: make scratchpad memory only 
The dual scraptchpad thing doesn't work. Things become very
complicated when it's time to write that back to the file. We
overwrite our contents and end up with garbage.
 2019-07-21 10:45:58 -04:00
Virgil Dupras
942d2a952d ed: take filename as an argument 
This hard-binds ed to the filesystem (I liked the idea of working
only with blockdevs though...), but this is necessary for the
upcoming `w` command. We need some kind of way to tell the
destination to write to truncate itself.

This only has a meaning in the filesystem, but it's necessary to
let the file know that its registered file size has possibly
shrunk.

I thought of alternatives that would have allowed me to keep ed
blkdev-centered, but they were all too hackish to my own taste.

Hence, this new hard-bind on files.
 2019-07-20 19:43:07 -04:00
Virgil Dupras
fe15bafeca zasm: fix bug with registry selection 
During expression parsing, if a local label was parsed, it would
select the local registry and keep that selection, making
subsequent global labels register in the wrong place.
 2019-07-20 18:07:52 -04:00
Virgil Dupras
a7afbe091e tools/tests: remove scas requirement 
I'm about to break compatibility with scas. Before I do that, I
need to adjusts tests. Instead of running scas to compare results,
we commit expected result as binaries directly in the repo.
 2019-07-20 17:13:57 -04:00
Virgil Dupras
0c0db41477 recipes/sms/kbd: add schematic 2019-07-20 14:51:34 -04:00
Virgil Dupras
57e7b3ca05 recipes/sms/kbd: PS/2 keyboard adapter for the SMS! 2019-07-20 12:42:55 -04:00
Virgil Dupras
23354eba94 stdio: fix broken ReadC logic 
Looping inside ReadC broke the shell's hook logic. We have to
return immediately when nothing is typed.
 2019-07-19 14:44:47 -04:00
Virgil Dupras
253674ea05 Fix broken tests 
Also, make tests run in a *BSD environment
 2019-07-19 14:24:35 -04:00
Virgil Dupras
eefadc3917 ed: add support for 'a' and 'i' 2019-07-14 17:35:21 -04:00
Virgil Dupras
77a23cee84 ed: fix bufDelLines logic 
It was mostly wrong.
 2019-07-14 16:18:33 -04:00
Virgil Dupras
5669884508 ed: read initial contents in bufInit 2019-07-14 12:19:37 -04:00
Virgil Dupras
797cbdcc95 blockdev: protect IX in routines 
Sure, it's a bit slower, but it prevents a lot of hard to debug
problems. I don't have to want to remember "don't use IX if you
have any blk* calls". Let's optimize I/O later.
 2019-07-14 12:17:13 -04:00
Virgil Dupras
3b0029335a ed: add README 2019-07-14 11:31:14 -04:00
Virgil Dupras
8af1cf468c ed: add 'd' cmd 2019-07-14 10:32:28 -04:00
Virgil Dupras
50d0dc982c ed: check addr bounds 2019-07-14 09:04:51 -04:00
Virgil Dupras
c811d5330c apps/ed: add support for addr ranges 2019-07-13 22:09:17 -04:00
Virgil Dupras
2d9f74c2af apps/ed: refactoring 2019-07-13 21:08:16 -04:00
Virgil Dupras
8cf68dc7ad apps/ed: handle +[n] and -[n] addresses 2019-07-13 16:30:30 -04:00
Virgil Dupras
3861670bcc shell: don't parse empty cmds 2019-07-13 15:34:43 -04:00
Virgil Dupras
951dd2206d apps/ed: add the concept of "current line" 2019-07-13 15:28:44 -04:00
Virgil Dupras
e0f2a71dfc apps/ed: print specified line 2019-07-13 14:01:20 -04:00
Virgil Dupras
237d04fefd zasm: update bootstrap bin 2019-07-13 11:54:47 -04:00
Virgil Dupras
6dbbfa837d apps/ed: add (dummy) line number processing 
Starting to feel interactive...
 2019-07-13 11:53:30 -04:00
Virgil Dupras
3491c26132 apps/ed: start implementing I/O 2019-07-13 11:29:06 -04:00
Virgil Dupras
3d474c9121 apps/ed: first steps 2019-07-13 09:57:37 -04:00
Virgil Dupras
921a109749 stdio: little tweaks 2019-07-13 09:28:35 -04:00
Virgil Dupras
e01ee170cb stdio: add stdioReadC 
A routine to conveniently read lines from TTY. Extracted from
shell. Will be used in other places.
 2019-07-13 09:19:01 -04:00