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Rewriting RGBDS... In Rust!

Eldred Habert ISSOtm

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Rewriting RGBDS... In Rust!
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@ISSOtm
ISSOtm / hardest_part_in_lexer.c
Created April 11, 2020 15:54
"@ISSOtm what's the hardest part about the lexer [of RGBDS]?"
#define keepOnGetc(var, handle) \
do { \
(var) = fgetc(handle); \
} while ((var) == EOF && ferror(handle) && errno == EINTR)
/* Pointer to chars to inject in lexer input */
static char const *insertPtr = NULL;
/* TODO: this doesn't handle interactive buffers; should it try to? */
/*
@ISSOtm
ISSOtm / set_data.s
Created April 15, 2020 21:29
Optimized GBDK lib funcs
.include "global.s"
.globl .copy_vram
;; BANKED: checked
.area _BASE
_set_bkg_data::
_set_win_data::
ld d, #0x90
@ISSOtm
ISSOtm / pal_fade.asm
Created August 21, 2020 19:36
Palette fader for GBC
INCLUDE "defines.asm"
SECTION "Palette buffer fading", ROM0
; Applies fade to both palette buffers
;
FadePaletteBuffers::
ld hl, wFadeSteps
dec [hl]
@ISSOtm
ISSOtm / header.asm
Created September 7, 2020 02:15
Most of Secret Project's init code
Reset::
di ; Disable interrupts while we set up
; Kill sound
xor a
ldh [rNR52], a
; Wait for VBlank and turn LCD off
.waitVBlank
ldh a, [rLY]
@ISSOtm
ISSOtm / gb-vwf.sym
Created September 13, 2020 19:17
gb-vwf sym file
; File generated by rgblink
00:0008 WaitVBlank
00:0010 MemsetSmall
00:0018 MemcpySmall
00:0074 MemcpySmall.noVBlank
00:0076 LCDMemcpy
00:0079 LCDMemcpy.loop
00:008c LCDMemsetSmall
00:008d LCDMemsetSmallFromB
00:0099 CharsetPtrs
@ISSOtm
ISSOtm / pal_fade_dmgbc.asm
Created September 19, 2020 14:37
Palette fader for CGB with support for DMG fading, too!
FadeDMGToWhite:
ld c, LOW(hBGP)
ld hl, wBGP
.fadeDMGPalToWhite
ld a, [hli]
ld b, 4
.fadeDMGColorToWhite
ld e, a
and $C0
@ISSOtm
ISSOtm / subnet.py
Created October 9, 2020 21:49
Python script to print info about an IPv4 subnet mask
#!/usr/bin/env python3
import itertools
import sys
if len(sys.argv) < 2:
print(f"Usage: {argv[0]} <subnet mask>\n\tSubnet mask must be in dotted decimal form.", file=sys.stderr)
exit(1)
@ISSOtm
ISSOtm / Makefile
Last active February 20, 2021 23:39
CRC self-test code for Game Boy
$(BINDIR)/game.gb: $(SRCDIR)/tools/crcify.py $(OBJS)
@$(MKDIR) -p $(@D)
$(RGBLINK) $(LDFLAGS) -o $@ $(OBJS)
$(RGBFIX) $(FIXFLAGS) $@
$(RGBASM) $(ASFLAGS) -D'BANK_BYTE=$$'$$(xxd -s 0x148 -l 1 -p $@) -o $(OBJDIR)/crc.o $(SRCDIR)/crc.asm
$(RGBLINK) $(LDFLAGS) -o $@ $(OBJS) \
&& $(RGBFIX) $(FIXFLAGS) $@ \
&& $(PY) $< $@ \
&& $(RGBFIX) $(FIXFLAGS) $@
@ISSOtm
ISSOtm / 2byte_charmaps.asm
Created March 7, 2021 20:00
Macro for shimming 2-byte charmaps
NEWCHARMAP "Low byte"
charmap "A", $12
NEWCHARMAP "High byte"
charmap "A", $34
; ...
@ISSOtm
ISSOtm / bestsci.i
Created March 10, 2021 21:11
INTERCAL program that prints "Arch is the best!" by transcoding ASCII on the fly. Uses C-INTERCAL I/O
PLEASE NOTE THAT THIS WAS MADE FOR C-INTERCAL
PLEASE DO .10 <- #18
PLEASE DO ,10 <- .10
PLEASE DO ,11 <- .10
DO NOT BE AFRAID, THESE ARE ASCII NUMBERS, NOT "TURING TAPE"
DO ,10SUB#1 <- #65
DO ,10SUB#2 <- #114
DO ,10SUB#3 <- #99
DO ,10SUB#4 <- #104