source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Device/Serial/SerialDPT.asm@ 364

Last change on this file since 364 was 334, checked in by gregli@…, 13 years ago

Serial server DPT flag optimization, remove Serial/IDE specific header on drive scan results, added GNU GPL v2 banner at boot.

File size: 1.5 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;
[334]27 mov al, [es:si+SerialServer_ATA_wDriveFlags]
28 shl al, 1
29 mov byte [di+DPT.bFlagsHigh], al
[258]30
[179]31 ret
32
[334]33%ifndef CHECK_FOR_UNUSED_ENTRYPOINTS
34 %if FLGH_DPT_SERIAL_DEVICE != 0x4 || FLGH_DPT_SERIAL_FLOPPY != 0x10 || FLGH_DPT_SERIAL_FLOPPY_TYPE_MASK != 0xe0 || FLGH_DPT_SERIAL_FLOPPY_TYPE_FIELD_POSITION != 5
35 %error "The serial server passes FLGH values into SerialDPT_Finalize directly. If the flag positions are changed, corresponding changes will need to be made in the serial server, and likely a version check put in to deal with servers talking to incompatible clients"
36 %endif
37%endif
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