Ryan, I place NO faith in any IBM documentation as being %100 correct.
BUT... this patent description might be useful. I can HTML-ize it.
A map of the PCI configuration data space is shown in Table II:
TABLE II
BYTE(S) DESCRIPTION ACCESS TYPE
0-1 Vendor Identification Read Only
2-3 Device Identification Read Only
4-5 Command Read/Write
6-7 Status Read/Write
8 Revision D Read Only
9-Bh Class Code Read Only
Ch. Cache Line Size Read/Write
Dh Latency Timer Read/Write
Eh Header Type Read Only
Fh Built In Self Test Read/Write
10-2th Base Address Registers Read/Write
28h-2Fh Reserved M
3Oh-33 Expansion ROM Base Address Read/Write
34h-37h Reserved o
38h-3B Reserved
3Ch Interrupt Line Read Only
3Dh Interrupt Pin Read Only
3Eh MinGNT Read Only
3Fh Max-LAT Read Only
40h-FF Device Specific -
Louis Ohland wrote:
https://www.ardent-tool.com/docs/patent/US5446869.pdf
I sang this song a hundred, maybe a thousand years ago
No one ever listens, I just play and then I go
Off into the sunset like the Western heroes do
Tell me what you're gonna do
Ryan Alswede wrote:
Yes, in a general way. No. No.
https://www.ardent-tool.com/docs/pdf/PS2_Model_80_Technical_Reference_Apr87.pdf
Pages 81 and 82.
Disable interrupts <-probably not possible in DOS mode
Push CDSETUP high. 0x96 bit 3
Disable the card. 0x102 bit 0 to off
Do POS / XPOS
Enable the card 0x102 bit 0 to on
Set CDSETUP Low 0x96 write 0x00
Reenable interrupts
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)