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More Compaq-specific tweaks

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This commit is contained in:
Jeff Parsons 2015-04-15 20:40:18 -07:00 • committed by jeffpar
commit b9252390bf
6 changed files with 339 additions and 179 deletions
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65
modules/pcjs/lib/memory.js
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@ -386,12 +386,12 @@ Memory.prototype = {
*/
setReadAccess: function(afn, fDirect) {
this.readByte = afn[0] || this.readNone;
this.readShort = afn[1] || this.readNone;
this.readLong = afn[2] || this.readNone;
this.readShort = afn[1] || this.readShortDefault;
this.readLong = afn[2] || this.readLongDefault;
if (fDirect) {
this.readByteDirect = afn[0] || this.readNone;
this.readShortDirect = afn[1] || this.readNone;
this.readLongDirect = afn[2] || this.readNone;
this.readShortDirect = afn[1] || this.readShortDefault;
this.readLongDirect = afn[2] || this.readLongDefault;
}
},
/**
@ -403,12 +403,12 @@ Memory.prototype = {
*/
setWriteAccess: function(afn, fDirect) {
this.writeByte = !this.fReadOnly && afn[3] || this.writeNone;
this.writeShort = !this.fReadOnly && afn[4] || this.writeNone;
this.writeLong = !this.fReadOnly && afn[5] || this.writeNone;
this.writeShort = !this.fReadOnly && afn[4] || this.writeShortDefault;
this.writeLong = !this.fReadOnly && afn[5] || this.writeLongDefault;
if (fDirect) {
this.writeByteDirect = afn[3] || this.writeNone;
this.writeShortDirect = afn[4] || this.writeNone;
this.writeLongDirect = afn[5] || this.writeNone;
this.writeShortDirect = afn[4] || this.writeShortDefault;
this.writeLongDirect = afn[5] || this.writeLongDefault;
}
},
/**
@ -533,6 +533,55 @@ Memory.prototype = {
this.dbg.message("attempt to write " + str.toHexWord(v) + " to invalid block %" + str.toHex(this.addr), true);
}
},
/**
* readShortDefault(off)
*
* @this {Memory}
* @param {number} off
* @return {number}
*/
readShortDefault: function readShortDefault(off)
{
return this.readByteDirect(off) | (this.readByteDirect(off + 1) << 8);
},
/**
* readLongDefault(off)
*
* @this {Memory}
* @param {number} off
* @return {number}
*/
readLongDefault: function readLongDefault(off)
{
return this.readByteDirect(off) | (this.readByteDirect(off + 1) << 8) | (this.readByteDirect(off + 2) << 16) | (this.readByteDirect(off + 3) << 24);
},
/**
* writeShortDefault(off, w)
*
* @this {Memory}
* @param {number} off
* @param {number} w
*/
writeShortDefault: function writeShortDefault(off, w)
{
Component.assert(!(w & ~0xffff));
this.writeByteDirect(off, w & 0xff);
this.writeByteDirect(off + 1, w >> 8);
},
/**
* writeLongDefault(off, w)
*
* @this {Memory}
* @param {number} off
* @param {number} w
*/
writeLongDefault: function writeLongDefault(off, w)
{
this.writeByteDirect(off, w & 0xff);
this.writeByteDirect(off + 1, (w >> 8) & 0xff);
this.writeByteDirect(off + 2, (w >> 16) & 0xff);
this.writeByteDirect(off + 3, (w >>> 24));
},
/**
* readByteMemory(off)
*