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Updated the CP/M-86 disk page, and added a new Debugger dump command ("da") that's useful for dumping the ASCII contents of a PCx86 text video buffer

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This commit is contained in:
Jeff Parsons 2017-07-06 08:41:25 -07:00 • committed by Jeff Parsons
commit c9053b1d47
17 changed files with 1676 additions and 1427 deletions
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29
modules/pcx86/lib/debugger.js
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@ -4927,7 +4927,7 @@ class DebuggerX86 extends Debugger {
return;
}
if (sCmd[1] && "bwd".indexOf(sCmd[1]) < 0) {
if (sCmd[1] && "abwd".indexOf(sCmd[1]) < 0) {
this.println("unrecognized dump command");
return;
}
@ -4951,20 +4951,22 @@ class DebuggerX86 extends Debugger {
}
var sDump = "";
var fASCII = false;
var size = (sCmd == "dd"? 4 : (sCmd == "dw"? 2 : 1));
var cb = (size * len) || 128;
var cLines = ((cb + 15) >> 4) || 1;
var cbLine = (size == 4? 16 : this.nBase); // the base also happens to be a reasonable number of bytes/line
if (sCmd[1] == 'a') {
fASCII = true;
cLines = 25;
cbLine = 160;
cb = cLines * cbLine;
}
while (cLines-- && cb > 0) {
var data = 0, iByte = 0, i;
var sData = "", sChars = "";
sAddr = this.toHexAddr(dbgAddr);
/*
* It's just coincidence that we want to dump 8 bytes per line when using base 8 and 16 bytes
* per line when using base 16, because octal requires more digits.
*/
var nBytes = (size == 4? 16 : this.nBase);
for (i = nBytes; i > 0 && cb > 0; i--) {
for (i = cbLine; i > 0 && cb > 0; i--) {
var b = this.getByte(dbgAddr, 1);
data |= (b << (iByte++ << 3));
if (iByte == size) {
@ -4972,14 +4974,17 @@ class DebuggerX86 extends Debugger {
sData += (size == 1? (i == 9? '-' : ' ') : " ");
data = iByte = 0;
}
sChars += (b >= 32 && b < 128? String.fromCharCode(b) : '.');
sChars += (b >= 32 && b < 128? String.fromCharCode(b) : (fASCII? '' : '.'));
cb--;
}
if (sDump) sDump += '\n';
sDump += sAddr + " " + sData + Str.pad(sChars, sChars.length + i * 3 + 1, true);
if (fASCII) {
sDump += sChars;
} else {
sDump += sAddr + " " + sData + Str.pad(sChars, sChars.length + i * 3 + 1, true);
}
}
if (sDump) this.println(sDump);
if (sDump) this.println(sDump.replace(/\s*$/, ""));
this.dbgAddrNextData = dbgAddr;
}