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Scaffolding for VGA CHAIN4 support

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This commit is contained in:
Jeff Parsons 2015-06-30 20:29:51 -07:00
commit 718073f45f
9 changed files with 869 additions and 30 deletions
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12
modules/pcjs/lib/memory.js
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@ -636,8 +636,8 @@ Memory.prototype = {
*/
writeShortDefault: function writeShortDefault(off, w, addr) {
Component.assert(!(w & ~0xffff));
this.writeByte(off, w & 0xff);
this.writeByte(off + 1, w >> 8);
this.writeByte(off, w & 0xff, addr);
this.writeByte(off + 1, w >> 8, addr);
},
/**
* writeLongDefault(off, w, addr)
@ -648,10 +648,10 @@ Memory.prototype = {
* @param {number} addr
*/
writeLongDefault: function writeLongDefault(off, w, addr) {
this.writeByte(off, w & 0xff);
this.writeByte(off + 1, (w >> 8) & 0xff);
this.writeByte(off + 2, (w >> 16) & 0xff);
this.writeByte(off + 3, (w >>> 24));
this.writeByte(off, w & 0xff, addr);
this.writeByte(off + 1, (w >> 8) & 0xff, addr);
this.writeByte(off + 2, (w >> 16) & 0xff, addr);
this.writeByte(off + 3, (w >>> 24), addr);
},
/**
* readByteMemory(off, addr)