uxn

Varvara Ordinator, written in ANSI C(SDL2)
git clone https://git.eamoncaddigan.net/uxn.git
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commit 82732f161ed9a79496c96a3318d7cd5d7e9f2dde
parent f377bdf59c5f03452b165204623cb1bb67c2a18b
Author: neauoire <aliceffekt@gmail.com>
Date:   Mon, 15 Feb 2021 14:04:58 -0800

Added graphical hello world example

Diffstat:
Massembler.c | 23+++++++++++++++++++----
Mbuild.sh | 5-----
Memulator.c | 9++++++---
Dexamples/condjump.usm | 17-----------------
Mexamples/hello.usm | 94+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------
Mexamples/sprite.usm | 4++--
6 files changed, 112 insertions(+), 40 deletions(-)

diff --git a/assembler.c b/assembler.c @@ -158,6 +158,18 @@ skipcomment(char *w, int *cap) } int +skipbinary(char *w, int *cap) +{ + if(w[0] == ']') { + *cap = 0; + return 1; + } + if(w[0] == '[') *cap = 1; + if(*cap) return 1; + return 0; +} + +int skipstring(char *w, int *cap, Uint16 *addr) { if(w[0] == '"') { @@ -195,13 +207,15 @@ capturestring(char *w, int *cap) int pass1(FILE *f) { - int ccmnt = 0, cstrg = 0; + int ccmnt = 0, cstrg = 0, cbits = 0; Uint16 addr = 0; char w[64]; while(fscanf(f, "%s", w) == 1) { if(skipcomment(w, &ccmnt)) continue; if(skipstring(w, &cstrg, &addr)) continue; - if(w[0] == '@') { + if(skipbinary(w, &cbits)) + addr += w[0] != '[' && w[0] != ']' ? 2 : 0; + else if(w[0] == '@') { if(!makelabel(w + 1, addr, 0)) return error("Pass1 failed", w); } else if(w[0] == ';') { @@ -233,7 +247,7 @@ pass1(FILE *f) int pass2(FILE *f) { - int ccmnt = 0, cstrg = 0; + int ccmnt = 0, cstrg = 0, cbits = 0; char w[64]; while(fscanf(f, "%s", w) == 1) { Uint8 op = 0; @@ -242,7 +256,8 @@ pass2(FILE *f) if(skipcomment(w, &ccmnt)) continue; if(capturestring(w, &cstrg)) continue; /* clang-format off */ - if(w[0] == '|') p.ptr = shex(w + 1); + if(skipbinary(w, &cbits)) { if(w[0] != '[' && w[0] != ']') { pushshort(shex(w), 0); } } + else if(w[0] == '|') p.ptr = shex(w + 1); else if((op = findopcode(w)) || scmp(w, "BRK")) pushbyte(op, 0); else if(w[0] == ':') fscanf(f, "%s", w); else if(w[0] == ';') fscanf(f, "%s", w); diff --git a/build.sh b/build.sh @@ -13,11 +13,6 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr clang-format -i uxn.h clang-format -i uxn.c -# Cli -clang-format -i cli.c -# rm -f ./bin/cli -# cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werror=implicit-int -Werror=incompatible-pointer-types -Werror=int-conversion -Wvla -g -Og -fsanitize=address -fsanitize=undefined uxn.c cli.c -o bin/cli - # Emulator clang-format -i emulator.c rm -f ./bin/emulator diff --git a/emulator.c b/emulator.c @@ -264,12 +264,15 @@ Uint8 spritew(Device *d, Memory *m, Uint8 b) { d->mem[d->ptr++] = b; - if(d->ptr > 6) { + if(d->ptr > 7) { Uint16 x = (d->mem[2] << 8) + d->mem[3]; Uint16 y = (d->mem[0] << 8) + d->mem[1]; Uint8 *chr = &m->dat[(d->mem[4] << 8) + d->mem[5]]; - drawchr(pixels, x, y, chr); - if(d->mem[6]) + if(!d->mem[6]) + drawchr(pixels, x, y, chr); + else + drawicn(pixels, x, y, chr, d->mem[6], 0); + if(d->mem[7]) REQDRAW = 1; d->ptr = 0; } diff --git a/examples/condjump.usm b/examples/condjump.usm @@ -1,17 +0,0 @@ -( conditional jump ) - -|0100 @RESET - -#06 #05 GTH ,there ROT JMP? POP2 - -@here ( when lesser or equal ) - #ee - BRK - -@there ( when greater ) - #ff - BRK - -|c000 @FRAME BRK -|d000 @ERROR BRK -|FFFA .RESET .FRAME .ERROR diff --git a/examples/hello.usm b/examples/hello.usm @@ -2,20 +2,96 @@ :dev/w fff9 ( const write port ) +;x 2 ;y 2 ;color 1 + |0100 @RESET - #00 =dev/w ( set dev/write to sprite ) - ,string ( add string pointer to stack ) - @loop - DUP2 LDR IOW ( write pointer value to console ) - #0001 ADD2 ( increment string pointer ) - DUP2 LDR #00 NEQ ,loop ROT JMP? POP2 ( while *ptr!=0 goto loop ) + ( print to console ) + ,string ,displaycli JSR + + ( print to screen ) + #0008 =x #0030 =y #01 =color + ,string ,displaygui JSR + #0010 =x #0038 =y #02 =color + ,string ,displaygui JSR + #0018 =x #0040 =y #03 =color + ,string ,displaygui JSR + BRK -@string " Hello World " ( add string to memory ) +@string " Hello Merveilles " ( add string to memory ) + +@displaycli + #00 =dev/w ( set dev/write to console ) + @cliloop + DUP2 LDR IOW ( write pointer value to console ) + #0001 ADD2 ( increment string pointer ) + DUP2 LDR #00 NEQ ,cliloop ROT JMP? POP2 ( while *ptr!=0 goto loop ) + RTS + +@displaygui + #02 =dev/w ( set dev/write to sprite ) + @displayguiloop + DUP2 LDR ,printchar JSR + #0001 ADD2 + ~x #0008 ADD2 =x + DUP2 LDR #00 NEQ ,displayguiloop ROT JMP? POP2 + RTS + +@printchar + ~color #01 ROT ,getchar JSR ~x ~y ,puticon JSR + RTS + +@getchar + #00 SWP #0008 MUL2 ,SPRITESHEET ADD2 + RTS + +@puticon + IOW2 ( y short ) + IOW2 ( x short ) + IOW2 ( sprite address ) + IOW2 ( redraw byte ) + RTS + +|0300 @SPRITESHEET ( first 128 characters of the spectrum-zx font ) + +[ + 0000 0000 0000 0000 0000 2400 7e3c 0000 0000 2400 3c42 0000 0000 6c7c 7c38 1000 + 0010 387c 7c38 1000 0038 387c 6c10 3800 0010 387c 7c10 3800 0000 0018 1800 0000 + 007e 4242 4242 7e00 0000 1824 2418 0000 0018 2442 4224 1800 001e 063a 4a48 3000 + 0038 446c 107c 1000 000c 0808 0838 3800 003e 2222 2266 6600 0000 0822 0022 0800 + 0000 1018 1c18 1000 0000 0818 3818 0800 0008 1c00 001c 0800 0028 2828 2800 2800 + 003e 4a4a 3a0a 0a00 000c 3046 620c 3000 0000 0000 0000 ffff 0010 3800 3810 0038 + 0008 1c2a 0808 0800 0008 0808 2a1c 0800 0000 0804 7e04 0800 0000 1020 7e20 1000 + 0000 4040 7e00 0000 0000 0024 6624 0000 0000 1038 7c00 0000 0000 007c 3810 0000 + 0000 0000 0000 0000 0008 0808 0800 0800 0014 1400 0000 0000 0024 7e24 247e 2400 + 0008 1e28 1c0a 3c08 0042 0408 1020 4200 0030 4832 4c44 3a00 0008 1000 0000 0000 + 0004 0808 0808 0400 0010 0808 0808 1000 0000 1408 3e08 1400 0000 0808 3e08 0800 + 0000 0000 0008 0810 0000 0000 3c00 0000 0000 0000 0000 0800 0000 0204 0810 2000 + 003c 464a 5262 3c00 0018 2808 0808 3e00 003c 4202 3c40 7e00 003c 421c 0242 3c00 + 0008 1828 487e 0800 007e 407c 0242 3c00 003c 407c 4242 3c00 007e 0204 0810 1000 + 003c 423c 4242 3c00 003c 4242 3e02 3c00 0000 0008 0000 0800 0000 0800 0008 0810 + 0000 0810 2010 0800 0000 003e 003e 0000 0000 1008 0408 1000 003c 4202 0c00 0800 + 003c 425a 5442 3c00 0018 2442 7e42 4200 007c 427c 4242 7c00 003c 4240 4042 3c00 + 0078 4442 4244 7800 007e 407c 4040 7e00 003e 4040 7c40 4000 003c 4240 4e42 3c00 + 0042 427e 4242 4200 003e 0808 0808 3e00 0002 0202 4242 3c00 0044 4870 4844 4200 + 0040 4040 4040 7e00 0042 665a 4242 4200 0042 6252 4a46 4200 003c 4242 4242 3c00 + 007c 4242 7c40 4000 003c 4242 524a 3c00 007c 4242 7c44 4200 003c 403c 0242 3c00 + 00fe 1010 1010 1000 0042 4242 4242 3c00 0042 4242 4224 1800 0042 4242 5a66 4200 + 0042 2418 1824 4200 0082 4428 1010 1000 007e 0408 1020 7e00 000c 0808 0808 0c00 + 0040 2010 0804 0200 0018 0808 0808 1800 0008 1422 0000 0000 0000 0000 0000 7e00 + 0008 0400 0000 0000 0000 1c02 1e22 1e00 0020 203c 2222 3c00 0000 1e20 2020 1e00 + 0002 021e 2222 1e00 0000 1c22 3c20 1e00 000c 101c 1010 1000 0000 1c22 221e 021c + 0020 202c 3222 2200 0008 0018 0808 0400 0008 0008 0808 4830 0020 2428 3028 2400 + 0010 1010 1010 0c00 0000 6854 5454 5400 0000 5864 4444 4400 0000 3844 4444 3800 + 0000 7844 4478 4040 0000 3c44 443c 0406 0000 2c30 2020 2000 0000 3840 3804 7800 + 0010 103c 1010 0c00 0000 4444 4444 3800 0000 4444 2828 1000 0000 4454 5454 2800 + 0000 4428 1028 4400 0000 4444 443c 0438 0000 7c08 1020 7c00 000c 0810 1008 0c00 + 0008 0808 0808 0800 0030 1008 0810 3000 0000 0032 4c00 0000 3c42 99a1 a199 423c +] -|c000 @FRAME BRK -|d000 @ERROR BRK +|c000 @FRAME +|d000 @ERROR |FFFA .RESET .FRAME .ERROR \ No newline at end of file diff --git a/examples/sprite.usm b/examples/sprite.usm @@ -31,8 +31,8 @@ BRK |0200 @SPRITESHEET -@cursor_icn .80c0 .e0f0 .f8e0 .1000 .0000 .0000 .0000 .0000 -@star_icn .1054 .28c6 .2854 .1000 .0000 .0000 .0000 .0000 +@cursor_icn [ 80c0 e0f0 f8e0 1000 0000 0000 0000 0000 ] +@star_icn [ 1054 28c6 2854 1000 0000 0000 0000 0000 ] BRK