clones/8800-simulator
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

examine and examineNext logic

Browse Source
This commit is contained in:
wixette
2020-03-07 01:26:25 +08:00
parent 6dc3f05734
commit ae735688e6
2 changed files with 53 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
js/sim8800.js
View File

@@ -51,6 +51,7 @@ class Sim8800 {
this.dumpMemCallback = dumpMemCallback;
this.isPoweredOn = false;
this.isRunning = false;
this.lastAddress = 0;
this.initMem();
CPU8080.init(this.getWriteByteCallback(),
this.getReadByteCallback(),
@@ -313,6 +314,7 @@ class Sim8800 {
return;
CPU8080.reset();
this.stop();
this.lastAddress = 0;
if (this.setAddressLedsCallback) {
this.setAddressLedsCallback(new Array(16).fill(1));
}
@@ -368,9 +370,37 @@ class Sim8800 {
this.dumpCpu();
this.dumpMem();
if (this.setAddressLedsCallback) {
var cpu = CPU8080.status();
var pcBits = Sim8800.parseBits(cpu.pc, 16);
this.setAddressLedsCallback(pcBits);
let cpu = CPU8080.status();
let bits = Sim8800.parseBits(cpu.pc, 16);
this.setAddressLedsCallback(bits);
}
}
/**
* Reads a byte from the given address.
* @param {number} address The given address.
*/
examine(address) {
if (!this.isPoweredOn)
return;
this.lastAddress = address;
if (this.setAddressLedsCallback) {
let bits = Sim8800.parseBits(address, 16);
this.setAddressLedsCallback(bits);
}
if (this.setDataLedsCallback) {
let bits = Sim8800.parseBits(this.mem[address], 8);
this.setDataLedsCallback(bits);
}
}
/**
* Reads a byte from the next address.
*/
examineNext() {
if (!this.isPoweredOn)
return;
this.lastAddress++;
this.examine(this.lastAddress);
}
};