@@ -56,6 +56,10 @@ cc uxn.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -Wno-unknown-pragmas -o uxn

 - Implement addressing

 - Implement 16 bits operations

+## Notes

+

+- Forth logic operators pop 2 items and add a bool to the stack, is that viable in uxn?

+

 ## Refs

 https://code.9front.org/hg/plan9front/file/a7f9946e238f/sys/src/games/nes/cpu.c

@@ -14,5 +14,5 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr

 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 -o uxn

 # run

-./uxnasm examples/arithmetic.usm boot.rom

+./uxnasm examples/core.usm boot.rom

 ./uxn boot.rom

@@ -1,4 +1,6 @@

 < core >

-0102

+34 34 EQU .label JSZ ff BRK

+

+:label ee RTS

new file mode 100644

@@ -0,0 +1,2 @@

+< subcond >

+

@@ -1,25 +1,9 @@

 < subroutines >

-:begin

-  .addall JSI ADD ADD

-  06 EQU .isequal JSI

-  BRK

+.part1 JSI 44 BRK

-:add1

-  01 RTS

+:part1 11 .part2 JSI RTS

-:add2

-  02 RTS

+:part2 22 .part3 JSI RTS

-:add3

-  03 RTS

-

-:addall

-  .add1 JSI

-  .add2 JSI

-  .add3 JSI

-  RTS

-

-:isequal

-  .addall JSI ff

-  RTS

+:part3 33 RTS

\ No newline at end of file

@@ -123,12 +123,14 @@ reset(void)

 	int i;

 	cpu.status = 0x00;

 	cpu.counter = 0x00;

+	cpu.literal = 0x00;

 	cpu.rom.ptr = 0x00;

 	cpu.wst.ptr = 0x00;

-	cpu.literal = 0x00;

 	cpu.rst.ptr = 0x00;

-	for(i = 0; i < 256; i++)

+	for(i = 0; i < 256; i++) {

 		cpu.wst.dat[i] = 0x00;

+		cpu.rst.dat[i] = 0x00;

+	}

 }

 int