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trap: OUT

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This commit is contained in:
dogeystamp 2024-01-14 19:58:17 -05:00
parent 666152229a
commit 7953afdd5d
Signed by: dogeystamp
GPG Key ID: 7225FE3592EFFA38
1 changed files with 9 additions and 1 deletions
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10
src/vm/instruction.rs
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@ -289,7 +289,7 @@ fn op_trap(vm: &mut VM, instr: u16) {
let trap_vector = instr & 0xff; let trap_vector = instr & 0xff;
match trap_vector { match trap_vector {
0x20 => trap_getc(vm), 0x20 => trap_getc(vm),
0x21 => todo!("OUT"), 0x21 => trap_out(vm),
0x22 => trap_puts(vm), 0x22 => trap_puts(vm),
0x23 => todo!("IN"), 0x23 => todo!("IN"),
0x24 => todo!("PUTSP"), 0x24 => todo!("PUTSP"),
@ -315,3 +315,11 @@ fn trap_getc(vm: &mut VM) {
while vm.mem.get_mem(0xFE00) & (1 << 15) == 0 {} while vm.mem.get_mem(0xFE00) & (1 << 15) == 0 {}
vm.registers.r0 = vm.mem.get_mem(0xFE02) & 0xFF; vm.registers.r0 = vm.mem.get_mem(0xFE02) & 0xFF;
} }
fn trap_out(vm: &mut VM) {
let val = char::from_u32((vm.registers.r0 & 0xFF).into());
match val {
Some(c) => print!("{}", c),
None => {}
}
}