Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-30, 18:41
yes second scope on dack2
Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-30, 17:39
The signal voltage for me is good - 5v The duration is OK ?
Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-29, 20:27
i followed the post but is different scenario , no chip in the middle no multiplex , direct connection for DRQ and DACK signal
Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-29, 19:53
I am 100% sure it works I don't know, it comes from a motherboard with problems but the floppies even if badly read them Read Floppy content error
Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-29, 18:56
And I forgot I also changed the oscillator 14.31818MHz
Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-29, 18:52
Are you testing DRQ2 and DACK2 with a scope? Where excatly are you tapping into the signal, the ISA slots? Could be there is a broken connection between the '206 and ISA. Look for 82C206 pinout/datasheet on the net, doesn't matter which brand, pretty much all of these have the same pinout. See if …
Re: AQUARIUS SYSTEMS, INC. A10001 - Does not want to read from the floppy
Posted on 2021-05-29, 11:28
I changed the KS83C206C with C&T 82C206 (i found this under the chip) and mobo continue have the same problem no signal on DRQ2 and DACK2 ,
Re: Need software similar to NSSI
Posted on 2021-05-29, 05:37
Uniflash do not work , i finally use Getrom and it works
Need software similar to NSSI
Posted on 2021-05-28, 21:33
I need to dump bios from Single Board Computer NSSI unfortunately do not work (hang on start) thx
Re: Bought these (retro) hardware today
Posted on 2021-05-28, 16:03
and A SBC useed. Aaeon SBC-557
Re: Bought these (retro) hardware today
Posted on 2021-05-28, 16:01
A SBC new boxed. mitac-MSC-251
ECS SI55P AIO - CHACHE MIXED MODE AND SIZE
Posted on 2021-05-24, 09:26
What cache type jumpers mean, PURE, MIXED ? I didn't understand from the chips how much cache this motherboard has is it correct 256?
Re: How about a MR-BIOS ROM file repository?
Posted on 2021-05-17, 12:41
I can't find post code and beep code of MrBios exist a table ? i have sometime 4 beep orhang to "1D" in a MrBios mobo https://www.hzdr.de/FWR/VB/BIOS/mrpost.htm 00 Kaltstart, Ausgabe des EDX Registers zu den I/O ports 85h, 86h, 8Dh, 8Eh für den späteren Gebrauch 01 Initialisierung und Anpassung des …
Re: Equivalent chip for this ram
Posted on 2021-05-14, 19:32
256K x 1 bit dram ICs are easier to get and problem is 1M x 1bit very hard to find in DIP package and either way, very expensive to obtain. I have same problem right now and I cannot find any sources to get 1M x 1bit 80ns or 70ns for my compaq Kingston expansion card conversion from 1MB to 4MB. 286 …
Octek RHINO 6vx - Missing regulator
Posted on 2021-05-13, 20:28
Hello everyone, I have this card and I would like to fix it but someone has thrown a hammer on it and the voltage regulator is missing, kindly is there any owner of this card that tells me what component is it?
Vectra VL2 4/33s - Cache memory
Posted on 2021-05-12, 11:25
Hi I'm looking for the cache module of the computer in subject , if someone have a pic or HP code can post it here . thx
Re: Compaq LTE Elite 4/75cx - Not Loading OS
Posted on 2021-05-10, 23:33
Have you tried to clone a disk with an operating system already loaded with GHOST or CLONEZILLA?
Re: Bought these (retro) hardware today
Posted on 2021-05-10, 12:20
ASEM-THOR-8050 What a case !! Transparent PSU Connection on the top
Re: How about a MR-BIOS ROM file repository?
Posted on 2021-05-09, 15:28
I can't find post code and beep code of MrBios exist a table ? i have sometime 4 beep orhang to "1D" in a MrBios mobo
Re: German theme 486 computer.
Posted on 2021-05-06, 18:30
If you find it useful I bought this computer a few days ago and it is made in Germany
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