source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/Serial/SerialDPT.asm @ 277

Last change on this file since 277 was 277, checked in by gregli@…, 12 years ago

Moved the bulk of the serial code to the assembly library, for inclusion in other utilities. Fixed a bug in int13h.asm when floppy support was not enabled that was preventing foreign drives from working properly.

File size: 1.1 KB
RevLine 
[150]1; Project name  :   XTIDE Universal BIOS
2; Description   :   Sets Serial Device specific parameters to DPT.
3
4; Section containing code
5SECTION .text
6
7;--------------------------------------------------------------------
8; SerialDPT_Finalize
9;   Parameters:
10;       DS:DI:  Ptr to Disk Parameter Table
11;       ES:SI:  Ptr to 512-byte ATA information read from the drive
12;   Returns:
[258]13;       CF:     Set, indicates that this is a floppy disk
14;               Clear, indicates that this is a hard disk
[150]15;   Corrupts registers:
[242]16;       AX
[150]17;--------------------------------------------------------------------
[179]18SerialDPT_Finalize:
[277]19        mov     ax, [es:si+SerialServer_ATA_wPortAndBaud]
[242]20        mov     [di+DPT_SERIAL.wSerialPortAndBaud], ax
[258]21
22;
23; Note that this section is not under %ifdef MODULE_SERIAL_FLOPPY.  It is important to 
[277]24; distinguish floppy disks presented by the server and not treat them as hard disks, even
[258]25; if the floppy support is disabled.
26;
[277]27        mov     al, [es:si+SerialServer_ATA_wFloppyFlagAndType]
[258]28        or      al, FLGH_DPT_SERIAL_DEVICE
29        or      byte [di+DPT.bFlagsHigh], al
30
31        test    al, FLGH_DPT_SERIAL_FLOPPY           ; clears CF
32        jz      .notfloppy
33        stc     
34.notfloppy:     
35       
[179]36        ret
37
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