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LDIRVM weirdness?

by pizzapower on 02-01-2022, 05:40
Score: 183.65 %, Type: Forum topic , Comments: 8 comments
use this configuration on the MSX2 : Pattern name table = 0x3800 (R#2 = 0xE) Colour table = 0x0000 (R#3 = 0x7F, R#10 = 0x0) Pattern generator table = 0x2000 (R#4 = 0x7) Sprite attribute table = 0x3c00 (R#5 = 0x78, R#11 = 0x0) Sprite pattern generator table = 0x4000 (R#6 = 0x8) It almost works, ...

tilegen.py tileset and tilemap generator

by pizzapower on 11-02-2022, 17:30
Score: 184.75 %, Type: Forum topic , Comments: 9 comments
match.group(0) if (match := re.search("[0-9]+", filename)) else None #< this match = re.search("[0-9]+", filename) #<- to this tile_num = match.group(0) if (match) else None This way Python 3.7 ...

MSX2 png to sprite conversion tool

by pizzapower on 13-02-2022, 18:14
Score: 184.75 %, Type: Forum topic , Comments: 4 comments
original image vs. OpenMSX Yet another python script I'd like to share. This one I created last week, but it was still a little rough around the edges. png2sprites.py converts an RGB PNG image into MSX2 VRAM sprite data. Output is ...

[FIXED] update disasm window in the debugger when slot changes or code is rewritten

by pizzapower on 18-02-2022, 01:39
Score: 184.85 %, Type: Forum topic , Comments: 2 comments
I proposed a fix for a long-standing and confusing bug when debugging and it seems to be OK now according to my tests. It's currently in my fork, but I created a PR . Whoa, this bug is almost 7 years old! *_* Nice! I encounter the issue ...

Github action to build debugger binaries

by pizzapower on 04-03-2022, 01:40
Score: 185.22 %, Type: Forum topic , Comments: 2 comments
Packages are here . Needs testing since I don't own a windows machine. You will probably have to move the dlls from the subdirectories into the base directory where the binary is. Since windows expects executable and dlls in same directory. ...

[Math] Drawing a circle, point-by-point, without floating point support

by pizzapower on 24-03-2022, 16:40
Score: 185.74 %, Type: Forum topic , Comments: 7 comments
sqrt which is slow. https://yurichev.com/news/20220322_circle/ Here is the final non-naïve algorithm (in case the article goes away): function circle(x0, y0, radius) { // starting point: var x = radius; var y = 0; var err = 0; while (x >= y) { // ...

Is SDCC 4.2.0 broken?

by pizzapower on 24-05-2022, 09:20
Score: 188.22 %, Type: Forum topic , Comments: 4 comments
_func:: out (#0x02f), a ld a, l out (#0x02f), a ld hl, #2 add hl, sp ld a, (hl) out (#0x02f), a ret And I call it like this: ... { uint8_t i; for (i = 0; i < 10; ++i) { func(11 + i, 6, 32 + i); ...

Microsoft BASIC on the Altair

by pizzapower on 01-06-2022, 16:45
Score: 188.32 %, Type: Forum topic , Comments: 1 comment
In this post, Raymond Chen talks about the technique of jumping into the middle of an 8080 instruction that is found in Microsoft BASIC disassembled source code. Since Z80 is compatible with 8080, does MSX-BASIC also feature this technique? ...

[SDCC] Vote on this to fix makebin!

by pizzapower on 04-06-2022, 18:32
Score: 188.67 %, Type: Forum topic , Comments: 6 comments
makebin is useless if you want to convert IHX into ROM files that don't start at #0, i.e. all ... be used with MSXhex. MSXhex 0.1.3 - Convert Intel HEX file to binary ... address (default: 0) -l length Total data length (default: 0, means autodetect) -b length Bank ...

New breakpoint viewer is ready!

by pizzapower on 21-03-2022, 07:11
Score: 186.6 %, Type: Forum topic , Comments: 33 comments
like this in the condition to check: [vpeek 0x1234] == 255 Would be nice if debug ... such breakpoint: bp#334 I'm using openMSX 17.0-330-g890c498ec on Debian Testing. Perhaps it's ... 17.0-330-g890c498ec on Debian Testing. Perhaps it's not even related to these last changes. Not sure how ...
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