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Bootorder configurable

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copy 2014-01-08 03:16:28 +01:00
parent ebacccf9e1
commit 94c81977c2
1 changed files with 12 additions and 4 deletions
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16
src/rtc.js
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@ -2,12 +2,14 @@
* RTC (real time clock) and CMOS
* @constructor
*/
function RTC(dev, diskette_type)
function RTC(dev, diskette_type, boot_order)
{
var
io = dev.io,
pic = dev.pic,
memory_size = dev.memory.size,
cmos_index = 0,
me = this,
@ -78,7 +80,7 @@ function RTC(dev, diskette_type)
{
var index = cmos_index;
cmos_index = 0xD;
//cmos_index = 0xD;
switch(index)
{
@ -137,14 +139,20 @@ function RTC(dev, diskette_type)
case 0x35:
return (memory_size - 16 * 1024 * 1024) >> 24 & 0xff;
case 0x38:
// used by seabios to determine the boot order
// Nibble
// 1: FloppyPrio
// 2: HDPrio
// 3: CDPrio
// 4: BEVPrio
// bootflag 1, high nibble, lowest priority
// Low nibble: Disable floppy signature check (1)
return 0x31; // hd
return 1 | boot_order >> 4 & 0xF0;
case 0x3D:
// bootflag 2, both nibbles, high and middle priority
return 0x21; // floppy first, cd second
return boot_order & 0xFF;
case 0x5B:
case 0x5C: