diff options
| -rw-r--r-- | 65c02.ts | 1 | ||||
| -rw-r--r-- | runtime.ts | 101 |
2 files changed, 85 insertions, 17 deletions
diff --git a/65c02.ts b/65c02.ts index 5720a75..9d286d9 100644 --- a/65c02.ts +++ b/65c02.ts @@ -169,7 +169,6 @@ export default class The65c02 { throw `not found ${instruction}` if (!this.instructions[opm[instruction].mnemonic]) throw `not implement, sowwy (${opm[instruction].mnemonic}.ts not found)`; - console.debug(this.programCounter.num().toString(16).padStart(4, '0'),opm[instruction].mnemonic, opm[instruction].mode) this.instructions[opm[instruction].mnemonic].call(this, opm[instruction].mode); } //SECTION - utils diff --git a/runtime.ts b/runtime.ts index eedcd70..2a16536 100644 --- a/runtime.ts +++ b/runtime.ts @@ -1,4 +1,5 @@ import The65c02, { BitField, Pin } from "./65c02.ts"; +import matrix from "./opcode_matrix.json" with { type: "json" }; // the thing used for ram const ram = new Uint8Array(2**16); @@ -35,39 +36,107 @@ cpu.cycle() //the cpu reset, pull RESB high and start execution! cpu.io.reset.HI() +function inspect() { + console.log('IO status:') + console.log(Object.entries(cpu.io) + .map(([name, io]) => { + if (io instanceof Pin) { + return ` ${name}: ${' '.repeat(20 - name.length)}${io.high ? "HI" : "LO"}` + } else if (io instanceof BitField) { + return ` ${name}: ${' '.repeat(20 - name.length)}${io.bits.map(k=>+k).join('')} (0x${io.num().toString(16)})` + } + }).join('\n')); + + console.log('\nregisters:') + console.log(` A: ${cpu.regA.bits.map(k=>+k).join('')} (0x${cpu.regA.num().toString(16)})`) + console.log(` X: ${cpu.regX.bits.map(k=>+k).join('')} (0x${cpu.regX.num().toString(16)})`) + console.log(` Y: ${cpu.regY.bits.map(k=>+k).join('')} (0x${cpu.regY.num().toString(16)})`) + console.log(` SP: ${cpu.stackPointer.bits.map(k=>+k).join('')} (0x${cpu.stackPointer.num().toString(16)})`) + console.log(` PC: ${cpu.programCounter.bits.map(k=>+k).join('')} (0x${cpu.programCounter.num().toString(16)})`) +} + const debug = Deno.args.includes('-d') +let skip = 0; +let breakpoints: number[] = [] +let instBreakpoints: string[] = [] + // repeat until the cpu requests an interrupt while (!cpu.io.interruptRequest.high) { cpu.cycle(); // debug step-by-step mode - if (debug) { + dbg: if (debug) { + const goog = Object.entries(matrix).find(([k]) => k == ram[cpu.programCounter.num()].toString(16)); + if (!goog) { + console.log('uh') + break dbg; + } + const instr = goog[1]; + console.debug(cpu.programCounter.num().toString(16).padStart(4, '0'),instr.mnemonic, instr.mode) + if (instBreakpoints.includes(instr.mnemonic)) { + instBreakpoints = instBreakpoints.filter(k => k != instr.mnemonic) + skip = 0; + console.log('hit instruction breakpoint on', cpu.programCounter.num().toString(16)) + } + if (breakpoints.includes(cpu.programCounter.num())) { + breakpoints = breakpoints.filter(k => k != cpu.programCounter.num()) + skip = 0; + console.log('hit breakpoint on', cpu.programCounter.num().toString(16)) + } + if (skip > 0) { + skip-- + break dbg; + } const i = new Uint8Array(8); + Deno.stdout.write(Uint8Array.from(['.'.charCodeAt(0)])) await Deno.stdin.read(i); if (i[0] == 'b'.charCodeAt(0)) { console.log('BREAK!!') break; + } else if (i[0] == 'i'.charCodeAt(0)) { + inspect() + } else if (i[0] == 's'.charCodeAt(0)) { + console.log('stack:') + for (let i = 0; i < cpu.stackPointer.num(); i++) { + console.log(` ${i.toString(16).padStart(2, '0')} ${ram[0x01FF - i].toString(2).padStart(8, '0')} (0x${ram[0x01FF - i].toString(16).padStart(4, '0')} ${ram[0x01FF - i]})`) + } + } else if (i[0] == 'k'.charCodeAt(0)) { + const num = +(new TextDecoder().decode(i.slice(1, 7)).replaceAll('\0', '')); + if (Number.isNaN(num)) { + console.log('NaN') + break dbg; + } + skip = num; + console.log(`skipping ${num} cycles`) + } else if (i[0] == 'r'.charCodeAt(0)) { + const num = i[2] ? parseInt(new TextDecoder().decode(i.slice(1, 7)).replace('\n', '').replaceAll('\0', ''), 16) : cpu.programCounter.num(); + console.log(`set breakpoint on`, num.toString(16)) + breakpoints.push(num) + } else if (i[0] == '?'.charCodeAt(0)) { + console.log(`b - break, exit +i - inspect +s - inspect stack +k[NUM] - skip +r[ADR] - breakpoint +g[ADR] - goto, change PC +I[INS] - breakpoint instruction`); + } else if (i[0] == 'g'.charCodeAt(0)) { + const num = i[2] ? parseInt(new TextDecoder().decode(i.slice(1, 7)).replace('\n', '').replaceAll('\0', ''), 16) : cpu.programCounter.num(); + console.log(`PC set to`, num.toString(16)) + cpu.programCounter.set(num) + } else if (i[0] == 'I'.charCodeAt(0)) { + const instr = new TextDecoder().decode(i.slice(1, 7)).replace('\n', '').replaceAll('\0', '') + console.log(`instruction breakpoint set on`, instr) + instBreakpoints.push(instr) } } } -console.log('end of execution\n\nIO status:') -console.log(Object.entries(cpu.io) - .map(([name, io]) => { - if (io instanceof Pin) { - return ` ${name}: ${' '.repeat(20 - name.length)}${io.high ? "HI" : "LO"}` - } else if (io instanceof BitField) { - return ` ${name}: ${' '.repeat(20 - name.length)}${io.bits.map(k=>+k).join('')} (0x${io.num().toString(16)})` - } - }).join('\n')); - -console.log('\nregisters:') -console.log(` A: ${cpu.regA.bits.map(k=>+k).join('')} (0x${cpu.regA.num().toString(16)})`) -console.log(` X: ${cpu.regX.bits.map(k=>+k).join('')} (0x${cpu.regX.num().toString(16)})`) -console.log(` Y: ${cpu.regY.bits.map(k=>+k).join('')} (0x${cpu.regY.num().toString(16)})`) +console.log('end of execution\n\n') +inspect() -console.debug('\nRAM:') +// console.debug('\nRAM:') Deno.writeFileSync('ram.bin', ram) // new Deno.Command('hexdump', { // args: ['-C', 'ram.bin'] |