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(D)word reads from IDE channels with no device attached now always return FFFF(FFFF), fixes the last IDE-related crashes.

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OBattler
2018-03-16 19:09:26 +01:00
parent a6ed6cde1e
commit 9ae91cdae6
1 changed files with 15 additions and 1 deletions
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16
src/disk/hdc_ide.c
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@@ -9,7 +9,7 @@
* Implementation of the IDE emulation for hard disks and ATAPI
* CD-ROM devices.
*
* Version: @(#)hdc_ide.c 1.0.35 2018/03/16
* Version: @(#)hdc_ide.c 1.0.36 2018/03/16
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -1612,6 +1612,20 @@ uint32_t ide_read_data(int ide_board, int length)
IDE *ide = &ide_drives[cur_ide[ide_board]];
uint32_t temp;
if (!ide->buffer) {
switch (length)
{
case 1:
return 0xff;
case 2:
return 0xffff;
case 4:
return 0xffffffff;
default:
return 0;
}
}
uint8_t *idebufferb = (uint8_t *) ide->buffer;
uint16_t *idebufferw = ide->buffer;
uint32_t *idebufferl = (uint32_t *) ide->buffer;