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port3C0_read16

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copy 2015-02-16 01:58:40 +01:00
parent 0a85f30744
commit 5a15d4864c
1 changed files with 7 additions and 1 deletions
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8
src/vga.js
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@ -164,7 +164,7 @@ function VGAScreen(cpu, bus, vga_memory_size)
var io = cpu.io;
io.register_write(0x3C0, this, this.port3C0_write);
io.register_read(0x3C0, this, this.port3C0_read);
io.register_read(0x3C0, this, this.port3C0_read, this.port3C0_read16);
io.register_read(0x3C1, this, this.port3C1_read);
io.register_write(0x3C2, this, this.port3C2_write);
@ -886,6 +886,12 @@ VGAScreen.prototype.port3C0_read = function()
return result;
};
VGAScreen.prototype.port3C0_read16 = function()
{
dbg_log("3C0 read16", LOG_VGA);
return this.port3C0_read() & 0xFF | this.port3C1_read() << 8 & 0xFF00;
};
VGAScreen.prototype.port3C1_read = function()
{
this.attribute_controller_index = -1;