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Fix cmos memory data

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copy 2016-01-03 02:30:36 +01:00
parent 1b1eb72ee0
commit efa96d9948
1 changed files with 27 additions and 12 deletions
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39
src/cpu.js
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@ -657,24 +657,39 @@ CPU.prototype.fill_cmos = function(rtc, settings)
// bootflag 2, both nibbles, high and middle priority
rtc.cmos_write(CMOS_BIOS_BOOTFLAG2, boot_order & 0xFF);
var memory_above_1m = 0x3c00;
rtc.cmos_write(CMOS_MEM_EXTMEM_LOW,
memory_above_1m & 0xFF);
rtc.cmos_write(CMOS_MEM_EXTMEM_HIGH,
memory_above_1m >> 8 & 0xFF);
// 640k or less if less memory is used
rtc.cmos_write(CMOS_MEM_BASE_LOW, 640 & 0xFF);
rtc.cmos_write(CMOS_MEM_BASE_HIGH, 640 >> 8);
var memory_above_16m = this.memory_size - 16 * 1024 * 1024;
rtc.cmos_write(CMOS_MEM_EXTMEM2_LOW,
memory_above_16m >> 16 & 0xFF);
rtc.cmos_write(CMOS_MEM_EXTMEM2_HIGH,
memory_above_16m >> 24 & 0xFF);
var memory_above_1m = 0; // in k
if(this.memory_size >= 1024 * 1024)
{
memory_above_1m = (this.memory_size - 1024 * 1024) >> 10;
memory_above_1m = Math.min(memory_above_1m, 0xFFFF);
}
// memory above 4G
rtc.cmos_write(CMOS_MEM_OLD_EXT_LOW, memory_above_1m & 0xFF);
rtc.cmos_write(CMOS_MEM_OLD_EXT_HIGH, memory_above_1m >> 8 & 0xFF);
rtc.cmos_write(CMOS_MEM_EXTMEM_LOW, memory_above_1m & 0xFF);
rtc.cmos_write(CMOS_MEM_EXTMEM_HIGH, memory_above_1m >> 8 & 0xFF);
var memory_above_16m = 0; // in 64k blocks
if(this.memory_size >= 16 * 1024 * 1024)
{
memory_above_16m = (this.memory_size - 16 * 1024 * 1024) >> 16;
memory_above_16m = Math.min(memory_above_16m, 0xFFFF);
}
rtc.cmos_write(CMOS_MEM_EXTMEM2_LOW, memory_above_16m & 0xFF);
rtc.cmos_write(CMOS_MEM_EXTMEM2_HIGH, memory_above_16m >> 8 & 0xFF);
// memory above 4G (not supported by this emulator)
rtc.cmos_write(CMOS_MEM_HIGHMEM_LOW, 0);
rtc.cmos_write(CMOS_MEM_HIGHMEM_MID, 0);
rtc.cmos_write(CMOS_MEM_HIGHMEM_HIGH, 0);
rtc.cmos_write(CMOS_EQUIPMENT_INFO, 0x2D);
rtc.cmos_write(CMOS_EQUIPMENT_INFO, 0x2F);
rtc.cmos_write(CMOS_BIOS_SMP_COUNT, 0);
};
CPU.prototype.load_bios = function()