clones/8800-simulator
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support poweron and power off

This commit is contained in:
wixette 2020-03-07 00:11:13 +08:00
parent 83f24f3694
commit 843c478cdd
2 changed files with 56 additions and 25 deletions
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38
index.html
View File

@ -59,20 +59,20 @@
<p>
INTE&nbsp;<span class="led">&#x25cb;</span>&nbsp;
PROT&nbsp;<span class="led">&#x25cb;</span>&nbsp;
MEMR&nbsp;<span class="led">&#x25cf;</span>&nbsp;
MEMR&nbsp;<span id="memr-led" class="led">&#x25cb;</span>&nbsp;
INP&nbsp;<span class="led">&#x25cb;</span>&nbsp;
MI&nbsp;<span class="led">&#x25cf;</span>&nbsp;
MI&nbsp;<span id="mi-led" class="led">&#x25cb;</span>&nbsp;
OUT&nbsp;<span class="led">&#x25cb;</span>&nbsp;
HLTA&nbsp;<span class="led">&#x25cb;</span>&nbsp;
STACK&nbsp;<span class="led">&#x25cb;</span>&nbsp;
WO&nbsp;<span class="led">&#x25cf;</span>&nbsp;
WO&nbsp;<span id="wo-led" class="led">&#x25cb;</span>&nbsp;
INT&nbsp;<span class="led">&#x25cb;</span>&nbsp;
</p>
</div>
<div id="wait-leds">
<p>
WAIT&nbsp;<span id="wait-led" class="led">&#x25cf;</span>&nbsp;
WAIT&nbsp;<span id="wait-led" class="led">&#x25cb;</span>&nbsp;
HLDA&nbsp;<span class="led">&#x25cb;</span>&nbsp;
</p>
</div>
@ -169,24 +169,30 @@
ledElem.innerHTML = isRunning ? '&#x25cb' : '&#x25cf';
}
function setStatusLedsCallback(isPoweredOn) {
var ledElems = [
document.getElementById('memr-led'),
document.getElementById('mi-led'),
document.getElementById('wo-led')
];
for (let i = 0; i < ledElems.length; i++) {
ledElems[i].innerHTML = isPoweredOn ? '&#x25cf' : '&#x25cb';
}
}
var dumpCpuElem = document.getElementById('cpu');
var dumpMemElem = document.getElementById('mem');
var sim = new Sim8800(256, 1000000,
setAddressLedsCallback, setDataLedsCallback,
setWaitLedCallback,
setWaitLedCallback, setStatusLedsCallback,
dumpCpuElem, dumpMemElem);
function init() {
sim.loadDataAsHexString(0, '00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f');
sim.loadData(16, [0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07]);
sim.dumpCpu();
sim.dumpMem()
function powerOn() {
sim.powerOn();
}
function test() {
console.log(Sim8800.parseBits(10, 1));
console.log(Sim8800.parseBits(0xF8, 1));
console.log(Sim8800.parseBits(0xF0, 2));
function powerOff() {
sim.powerOff();
}
function run() {
@ -195,14 +201,10 @@
// Pattern shift.
sim.loadDataAsHexString(0, '3e 8c d3 ff 0f c3 02 00');
sim.start();
sim.dumpCpu();
sim.dumpMem()
}
function stop() {
sim.stop();
sim.dumpCpu();
sim.dumpMem()
}
</script>
</body>

41
js/sim8800.js
View File

@ -30,6 +30,8 @@ class Sim8800 {
* callback to set data LEDs.
* @param {function(boolean)?} setWaitLedCallback The callback to
* set the WAIT LED.
* @param {function(boolean)?} setStatusLedsCallback The callback to
* set the STATUS LEDs.
* @param {Element?} dumpCpuElem The DOM element used to render
* dumped CPU status. null to disable the feature.
* @param {Element?} dumpMemElem The DOM element used to render
@ -37,13 +39,14 @@ class Sim8800 {
*/
constructor(memSize, clockRate,
setAddressLedsCallback, setDataLedsCallback,
setWaitLedCallback,
setWaitLedCallback, setStatusLedsCallback,
dumpCpuElem, dumpMemElem) {
this.clockRate = clockRate;
this.mem = new Array(memSize);
this.setAddressLedsCallback = setAddressLedsCallback;
this.setDataLedsCallback = setDataLedsCallback;
this.setWaitLedCallback = setWaitLedCallback;
this.setStatusLedsCallback = setStatusLedsCallback;
this.dumpCpuElem = dumpCpuElem;
this.dumpMemElem = dumpMemElem;
this.running = false;
@ -85,12 +88,12 @@ class Sim8800 {
* Fills the memory with dummy bytes.
*/
initMem(random = false) {
for (let i = 0; i < this.mem.length; i++) {
if (random) {
for (let i = 0; i < this.mem.length; i++) {
this.mem[i] = Math.floor(Math.random() * 256);
} else {
this.mem[i] = 0;
}
} else {
this.mem.fill(0);
}
}
@ -273,8 +276,16 @@ class Sim8800 {
*/
powerOn() {
this.stop();
reset();
this.reset();
this.initMem();
if (this.setStatusLedsCallback) {
this.setStatusLedsCallback(true);
}
if (this.setWaitLedCallback) {
this.setWaitLedCallback(false);
}
this.dumpCpu();
this.dumpMem();
}
/**
@ -282,8 +293,26 @@ class Sim8800 {
*/
powerOff() {
this.stop();
reset();
this.reset();
this.initMem();
if (this.setStatusLedsCallback) {
this.setStatusLedsCallback(false);
}
if (this.setWaitLedCallback) {
this.setWaitLedCallback(true);
}
if (this.setAddressLedsCallback) {
this.setAddressLedsCallback(new Array(16).fill(0));
}
if (this.setDataLedsCallback) {
this.setDataLedsCallback(new Array(8).fill(0));
}
if (this.dumpCpuElem) {
this.dumpCpuElem.innerHTML = '';
}
if (this.dumpMemElem) {
this.dumpMemElem.innerHTML = '';
}
}
/**