1db61376a2 | ||
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etc | ||
projects | ||
.clang-format | ||
.gitignore | ||
LICENSE | ||
README.md | ||
assembler.c | ||
build.sh | ||
emulator-cli.c | ||
emulator.c | ||
run.sh | ||
uxn.c | ||
uxn.h |
README.md
Uxn
A stack-based VM, written in ANSI C.
Setup
If you wish to build your own emulator, you can create a new instance of Uxn like:
#include "uxn.h"
Uxn u;
if(!bootuxn(&u))
return error("Boot", "Failed");
if(!loaduxn(&u, argv[1]))
return error("Load", "Failed");
if(!init())
return error("Init", "Failed");
evaluxn(u, u->vreset); /* Once on start */
evaluxn(u, u->vframe); /* Each frame
Uxambly
Read more in the Uxambly Guide.
( hello world )
%RTN { JMP2r }
( devices )
|0100 ;Console { pad 8 char 1 byte 1 short 2 }
|01F0 .RESET .FRAME .ERROR ( vectors )
|01F8 [ 13fd 1ef3 1bf2 ] ( palette )
( program )
|0200 @RESET
,text1 ,print-label JSR2
,text2 ,print-label JSR2
#ab =Console.byte
#cdef =Console.short
BRK
@print-label ( text )
$loop NOP
( send ) DUP2 LDR =Console.char
( incr ) #0001 ADD2
( loop ) DUP2 LDR #00 NEQ ^$loop MUL JMP
POP2
RTN
@text1 [ Welcome 20 to 20 UxnVM 0a00 ]
@text2 [ Hello 20 World 0a00 ]
@FRAME BRK
@ERROR BRK
TODOs
OS Boot Disk
- Load external disk in disk2
Assembler
- Includes
- Defines
- Jump helpers
- Implement Peek/Pook to helpers
- Create a theme designer application
- DateTime device
- Document controller.player2
Notes
Palettes
[ 6a03 4a0d aa0c ]
, purple/cyan[ a1f3 a14d a16c ]
, grey-pink/teal
Refs
https://code.9front.org/hg/plan9front/file/a7f9946e238f/sys/src/games/nes/cpu.c http://www.w3group.de/stable_glossar.html http://www.emulator101.com/6502-addressing-modes.html http://forth.works/8f0c04f616b6c34496eb2141785b4454 https://justinmeiners.github.io/lc3-vm/