HP OmniBook 800CT support utilities \ VOGONS

HP OmniBook 800CT support utilities

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First post, by bttr

Posted on 2020-05-04, 11:55

bttr Offline

Rank Newbie

Rank: Newbie
Posts: 34
Joined: 2006-04-19, 15:56
Location: Berlin, Germany

Hi!

I'm the proud owner of two 800CTs: One with a P100 and 16MB RAM, the other with P166MMX and 48MB RAM.
Recently I fiddled around with the OmniBook Support Utility Disk and found three tiny tools there: DOCK.COM, EXTFLOP.COM, and IDE.COM

DOCK.COM source code

1CSEG
2
3RS	100h
4
5	; --- Read status.
6	in	al, 66h
7
8	; === Use bit 4 only as return code.
9	; --- Make bit 4 the lowest bit.
10	ror	al, 1
11	ror	al, 1
12	ror	al, 1
13	ror	al, 1
14	; --- Kill all the upper bits.
15	and	al, 1
16
17	; --- Call DOS function "TERMINATE WITH RETURN CODE".
18	mov	ah, 4Ch
19	int	21h
20
21END

EXTFLOP.COM source code

1CSEG
2
3RS	100h
4
5	; --- Read status.
6	in	al, 67h
7
8	; === Use bit 3 only as return code.
9	; --- Make bit 3 the lowest bit.
10	ror	al, 1
11	ror	al, 1
12	ror	al, 1
13	; --- Kill all the upper bits.
14	and	al, 1
15
16	; --- Call DOS function "TERMINATE WITH RETURN CODE".
17	mov	ah, 4Ch
18	int	21h
19
20END

IDE.COM source code

1CSEG
2
3RS	100h
4
5	; --- Read status.
6	in	al, 67h
7
8	; === Use bit 2 only as return code.
9	; --- Make bit 2 the lowest bit.
10	ror	al, 1
11	ror	al, 1
12	; --- Kill all the upper bits.
13	and	al, 1
14
15	; --- Call DOS function "TERMINATE WITH RETURN CODE".
16	mov	ah, 4Ch
17	int	21h
18
19END

Source code is for the R86 assembler, which is part of http://www.lsi-j.co.jp/freesoft/. Don't ask, I just like R86.
But this source code is easy to convert to NASM or even DEBUG.

Now my problem is, these tools don't work for me.
Whatever I try, ports 66h and 67h always return FFh. I also verified with DEBUG.

Okay, EXTFLOP.COM is never called from the Utility Disk, but DOCK.COM is.
(I didn't try IDE.COM, as it also reads the same status byte EXTFLOP.COM.)

What I already tried:

1Setup                        | 66h | 67h
2-----------------------------+-----+----
3800/166 BIOS 2.01.00 gr      | --- | ---
4  Boot from HDD              | --- | ---
5    FDD not connected        | FFh | FFh
6    FDD connected (hot-plug) | FFh | FFh
7  Boot from FDD              | FFh | FFh
8  Boot from HDD (docked)     | --- | ---
9    FDD not connected        | FFh | FFh
10    FDD connected (hot-plug) | FFh | FFh
11  Boot from FDD (docked)     | FFh | FFh
12-----------------------------+-----+----
13800/100 BIOS 2.00.00 en      | --- | ---
14  Boot from FDD (docked)     | FFh | FFh

Am I doing something wrong?

Would be nice, if some other people could try on their own machines.
OmniBooks 300, 425, 430, 530, 600, are probably worth to try own too.

Atari Portfolio, Highscreen Handy Organizer, HP 95LX, HP 200LX, HP 1000CX, OmniBook 800CT, Sharp PC-3000, ThinkPad 770, ThinkPad R500

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