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Adding clocking mechanism for serial data transmission

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This commit is contained in:
Jeff Parsons 2016-08-17 14:09:02 -07:00
commit 140e1cf094
9 changed files with 526 additions and 400 deletions
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5
modules/pc8080/lib/video.js
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@ -1115,7 +1115,7 @@ Video.prototype.updateVT100 = function(fForced)
/*
* Cell cache logic is complicated by the fact that a line may be single-width one frame and double-width
* the next. So we store the visible line length at the start of each row in the cache, which must match if
* the cache is considered valid for the current line.
* the cache can be considered valid for the current line.
*/
var fLineCacheValid = this.fCellCacheValid && (this.aCellCache[iCell] == nColsVisible);
this.aCellCache[iCell++] = nColsVisible;
@ -1153,6 +1153,9 @@ Video.prototype.updateVT100 = function(fForced)
* cache entry, to guarantee that it's redrawn on the next update.
*/
this.assert(iCellUpdated >= 0);
if (DEBUG && (this.aCellCache[iCellUpdated] & 0x7f) == 0x48) {
console.log("spurious character?");
}
this.aCellCache[iCellUpdated] = -1;
cUpdated = 0;
}