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More panel work

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This commit is contained in:
Jeff Parsons 2015-01-29 18:44:58 -08:00 • committed by jeffpar
commit 531b9327c6
3 changed files with 271 additions and 47 deletions
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14
modules/pcjs/lib/bus.js
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@ -130,7 +130,7 @@ function Bus(parmsBus, cpu, dbg)
this.blockLimit = this.blockSize - 1;
this.blockTotal = ((this.busLimit + this.blockSize) / this.blockSize) | 0;
this.blockMask = this.blockTotal - 1;
this.assert(this.blockTotal <= Bus.BLOCK.MASK);
this.assert(this.blockTotal <= Bus.BLOCK.NUM_MASK);
/*
* Lists of I/O notification functions: aPortInputNotify and aPortOutputNotify are arrays, indexed by
@ -237,12 +237,18 @@ if (BACKTRACK) {
}
/*
* scanMemory() records block numbers in bits 0-14, a BackTrack "mod" bit in bit 15, and the block type at bit 16.
* scanMemory() records block numbers in bits 0-14, a BackTrack "mod" bit in bit 15, and a block type at bit 28;
* the bits reserved for a count are not used.
*/
Bus.BLOCK = {
MASK: 0x7fff,
NUM_SHIFT: 0,
NUM_MASK: 0x7fff,
BTMOD_SHIFT: 15,
TYPE_SHIFT: 16
BTMOD_MASK: 0x1,
COUNT_SHIFT: 16,
COUNT_MASK: 0x0fff,
TYPE_SHIFT: 28,
TYPE_MASK: 0x7
};
/**