vga: correctly advertise the latest bochs version, and make it r/w (fix #768)
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src/vga.js
16
src/vga.js
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@ -191,6 +191,9 @@ function VGAScreen(cpu, bus, vga_memory_size)
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*/
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this.latch_dword = 0;
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/** @type {number} */
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this.svga_version = 0xB0C5;
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/** @type {number} */
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this.svga_width = 0;
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@ -1998,6 +2001,16 @@ VGAScreen.prototype.port1CF_write = function(value)
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switch(this.dispi_index)
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{
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case 0:
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if(value >= 0xB0C0 && value <= 0xB0C5)
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{
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this.svga_version = value;
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}
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else
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{
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dbg_log("Invalid version value: " + h(value), LOG_VGA);
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}
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break;
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case 1:
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this.svga_width = value;
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if(this.svga_width > MAX_XRES)
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@ -2080,8 +2093,7 @@ VGAScreen.prototype.svga_register_read = function(n)
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switch(n)
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{
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case 0:
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// id
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return 0xB0C0;
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return this.svga_version;
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case 1:
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return this.dispi_enable_value & 2 ? MAX_XRES : this.svga_width;
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case 2:
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