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Started implementing peek/poke

This commit is contained in:
neauoire 2021-03-21 11:28:59 -07:00
parent 5661eb2a2b
commit c60dbfe872
4 changed files with 31 additions and 6 deletions
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2
assembler.c
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@ -47,7 +47,7 @@ Program p;
char ops[][4] = {
"BRK", "NOP", "LIT", "POP", "DUP", "SWP", "OVR", "ROT",
"EQU", "NEQ", "GTH", "LTH", "GTS", "LTS", "JMP", "JSR",
"LDR", "STR", "---", "---", "---", "---", "CLN", "STH",
"PEK", "POK", "LDR", "STR", "---", "---", "CLN", "STH",
"ADD", "SUB", "MUL", "DIV", "AND", "ORA", "EOR", "SFT"
};

2
build.sh
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@ -20,5 +20,5 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr
# cc uxn.c emulator.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -Wno-unknown-pragmas -L/usr/local/lib -lSDL2 -o bin/emulator
# run
./bin/assembler projects/software/noodle.usm bin/boot.rom
./bin/assembler projects/software/left.usm bin/boot.rom
./bin/emulator bin/boot.rom

21
projects/tests/peek.usm Normal file
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@ -0,0 +1,21 @@
( tests/cond )
;a { byte 1 }
;b { byte1 1 byte2 1 }
;c { byte1 1 byte2 1 byte3 1 }
|0100 @RESET
#12 #00 POK
#00 PEK
BRK
|c000 @FRAME
|d000 @ERROR
|FF00 ;Console { pad 8 char 1 byte 1 short 2 }
|FFF0 .RESET .FRAME .ERROR ( vectors )
|FFF8 [ 13fd 1ef3 1bf2 ] ( palette )

12
uxn.c
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@ -48,6 +48,8 @@ void op_lts(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, (S
void op_jmp(Uxn *u) { Uint8 a = pop8(u->src); u->ram.ptr += (Sint8)a; }
void op_jsr(Uxn *u) { Uint8 a = pop8(u->src); push16(u->dst, u->ram.ptr); u->ram.ptr += (Sint8)a; }
/* Memory */
void op_pek(Uxn *u) { Uint16 a = pop8(u->src); push8(u->src, mempeek8(u, a)); }
void op_pok(Uxn *u) { Uint16 a = pop8(u->src); Uint8 b = pop8(u->src); mempoke8(u, a, b); }
void op_ldr(Uxn *u) { Uint16 a = pop16(u->src); push8(u->src, mempeek8(u, a)); }
void op_str(Uxn *u) { Uint16 a = pop16(u->src); Uint8 b = pop8(u->src); mempoke8(u, a, b); }
void op_cln(Uxn *u) { push8(u->src, peek8(u->dst, 0)); }
@ -79,6 +81,8 @@ void op_lts16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->sr
void op_jmp16(Uxn *u) { u->ram.ptr = pop16(u->src); }
void op_jsr16(Uxn *u) { push16(u->dst, u->ram.ptr); u->ram.ptr = pop16(u->src); }
/* Memory(16-bits) */
void op_pek16(Uxn *u) { Uint16 a = pop16(u->src); push8(u->src, mempeek8(u, a)); }
void op_pok16(Uxn *u) { Uint16 a = pop16(u->src); Uint8 b = pop8(u->src); mempoke8(u, a, b); }
void op_ldr16(Uxn *u) { Uint16 a = pop16(u->src); push16(u->src, mempeek16(u, a)); }
void op_str16(Uxn *u) { Uint16 a = pop16(u->src); Uint16 b = pop16(u->src); mempoke16(u, a, b); }
void op_cln16(Uxn *u) { push16(u->src, peek16(u->dst, 0)); }
@ -96,24 +100,24 @@ void op_sft16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); Uint8 left
void (*ops[])(Uxn *u) = {
op_brk, op_nop, op_lit, op_pop, op_dup, op_swp, op_ovr, op_rot,
op_equ, op_neq, op_gth, op_lth, op_gts, op_lts, op_jmp, op_jsr,
op_ldr, op_str, op_nop, op_nop, op_nop, op_nop, op_cln, op_sth,
op_pek, op_pok, op_ldr, op_str, op_nop, op_nop, op_cln, op_sth,
op_add, op_sub, op_mul, op_div, op_and, op_ora, op_eor, op_sft,
/* 16-bit */
op_brk, op_nop16, op_lit16, op_pop16, op_dup16, op_swp16, op_ovr16, op_rot16,
op_equ16, op_neq16, op_gth16, op_lth16, op_gts16, op_lts16, op_jmp16, op_jsr16,
op_ldr16, op_str16, op_nop, op_nop, op_nop, op_nop, op_cln16, op_sth16,
op_pek16, op_pok16, op_ldr16, op_str16, op_nop, op_nop, op_cln16, op_sth16,
op_add16, op_sub16, op_mul16, op_div16, op_and16, op_ora16, op_eor16, op_sft16
};
Uint8 opr[][4] = { /* wstack-/+ rstack-/+ */
{0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {1,0,0,0}, {0,2,0,0}, {2,2,0,0}, {2,3,0,0}, {3,3,0,0},
{2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {1,0,0,0}, {1,0,0,2},
{2,1,0,0}, {3,0,0,0}, {1,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,1}, {0,1,1,0},
{1,1,0,0}, {2,0,0,0}, {2,1,0,0}, {3,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,1}, {0,1,1,0},
{2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0},
/* 16-bit */
{0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,2,0,0}, {0,2,0,0}, {1,1,0,0}, {4,6,0,0}, {6,6,0,0},
{4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,1,0,0}, {4,1,0,0}, {2,0,0,0}, {2,0,0,2},
{2,2,0,0}, {4,0,0,0}, {2,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,2}, {0,2,2,0},
{2,1,0,0}, {3,0,0,0}, {2,2,0,0}, {4,0,0,0}, {0,0,0,0}, {0,0,0,0}, {0,0,0,2}, {0,2,2,0},
{4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0},
};