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Enabled smooth scrolling, connected SerialPort UART transmitter status to the ChipSet FLAGS buffer (matching how the Keyboard UART transmitter status is connected), enabled binding of terminal I/O to the Control Panel output window (if any), and added simulation of received data at the programmed baud rate (but a better solution has been noted and needs to be implemented)

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This commit is contained in:
Jeff Parsons 2016-08-16 09:34:41 -07:00
commit cf24023d5d
8 changed files with 609 additions and 477 deletions
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45
modules/pc8080/lib/video.js
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@ -154,7 +154,10 @@ function Video(parmsVideo, canvas, context, textarea, container)
* Now that we've finished using nRowsBuffer to help define the screen size, we add one more
* row for text modes, to account for the VT100's scroll line buffer (used for smooth scrolling).
*/
if (this.cyCell > 1) this.nRowsBuffer++;
if (this.cyCell > 1) {
this.nRowsBuffer++;
this.bScrollOffset = 0;
}
/*
* Support for disabling (or, less commonly, enabling) image smoothing, which all browsers
@ -762,6 +765,23 @@ Video.prototype.updateRate = function(nRate)
this.rateMonitor = nRate;
};
/**
* updateScrollOffset(bScroll)
*
* Called from the ChipSet component whenever the screen scroll offset has been dynamically altered.
*
* @this {Video}
* @param {number} bScroll
*/
Video.prototype.updateScrollOffset = function(bScroll)
{
this.printMessage("updateScrollOffset(" + bScroll + ")");
if (this.bScrollOffset !== bScroll) {
this.bScrollOffset = bScroll;
this.updateScreen(-1);
}
};
/**
* doFullScreen()
*
@ -1091,6 +1111,8 @@ Video.prototype.updateVT100 = function(fForced)
nRows++;
}
this.fCellCacheValid = true;
this.assert(font < 0 || iCell === this.nCellCache);
if (MAXDEBUG && !fForced) {
@ -1103,14 +1125,23 @@ Video.prototype.updateVT100 = function(fForced)
this.printMessage("updateVT100(): update #" + this.nUpdateNumber + " at " +this.nUpdateSeconds + " corner=" + str.toHexByte(this.aCellCache[1]) + " cycles=" + this.nCyclesPrev + " delta=" + this.nCyclesDelta);
}
this.fCellCacheValid = true;
if (cUpdated && this.contextBuffer) {
if ((cUpdated || fForced) && this.contextBuffer) {
/*
* NOTE: We must subtract cyCell from cyBuffer to avoid displaying the extra "scroll line" that we normally
* buffer to support smooth-scrolling.
* We must subtract cyCell from cyBuffer to avoid displaying the extra "scroll line" that we normally
* buffer, in support of smooth scrolling. Speaking of which, we must also add bScrollOffset to ySrc
* (well, ySrc is always relative to zero, so no add is actually required).
*/
this.contextScreen.drawImage(this.canvasBuffer, 0, 0, this.cxBuffer, this.cyBuffer - this.cyCell, this.xScreenOffset, this.yScreenOffset, this.cxScreenOffset, this.cyScreenOffset);
this.contextScreen.drawImage(
this.canvasBuffer,
0, // xSrc
this.bScrollOffset, // ySrc
this.cxBuffer, // cxSrc
this.cyBuffer - this.cyCell, // cySrc
this.xScreenOffset, // xDst
this.yScreenOffset, // yDst
this.cxScreenOffset, // cxDst
this.cyScreenOffset // cyDst
);
}
};