Re: Motherboard looking like an ISA card
Posted on 2023-02-08, 16:37
Thanks all for your answers
Motherboard looking like an ISA card
Posted on 2023-02-07, 22:00
Hello. ICOP manufactures and sells SBCs which look like a plug-in ISA card, with the card being a fully equipped motherboard. Examples under this link https://www.icop.com.tw/product_list/43 I am curious to know if this type of SBCs have a specific name, and I am struggling to understand how they …
Re: Can't Create Partitions after DOS install
Posted on 2022-06-20, 18:18
Hello. update... No picture but hard drive was properly recognized by BIOS. I tried to hook up the HD to a modern computer via USB and create a partition with Minitool Partition Wizard ... When I re-hooked the HDD to the 486 Motherboard ...disaster... All directories and files were messed up...So I …
Re: Can't Create Partitions after DOS install
Posted on 2022-06-19, 20:40
So here is the information: - MB = PC Chips M912 v1.7 - BIOS = AMI but I will check the version - CPU = 486DX2-66 - 16 Mb RAM - HDD = Quantum Fireball CX 6.4 Gb (see attached) - Graphics = Trident TVGA 8900CL - IO card = MIO TK82C863/865 I will send a picture of the BIOS screen tomorrow but I could …
Re: Can't Create Partitions after DOS install
Posted on 2022-06-19, 13:26
Thanks for the reply. Yes the full HDD capacity is detected by the BIOS. See the clip screen of HWINFO. I also added the clip screen of FDISK when I attempt to create an extended partition.
Can't Create Partitions after DOS install
Posted on 2022-06-19, 11:37
Hello. I have a 6Gb hard drive and I used it to install DOS 6.2. During the install process, I chose to create and use a principal DOS FAT 16 partition with max size and the max I could choose was 472 Mb. That leaves a lot of empty space on the HDD. I wanted to use this empty space to create a 2nd …
Re: 486 Setup freezes suddenly
Posted on 2022-06-09, 20:36
I confirm the issue was the lack of cooler. After testing with one, the system no longer freezes. I really thought this CPU could work without any heatsink/cooler. Thanks for putting me in the right direction!
Re: 486 Setup freezes suddenly
Posted on 2022-06-09, 05:46
Indeed the CPU is quite hot. I am trying to find a cooler that fits with the socket 3 - not easy for such an old model. A couple are available on eBay but at an outrageous price or coming from the US (I am based in France) with a significant shipping cost + potential tax. Will keep you aware
Re: 486 Setup freezes suddenly
Posted on 2022-06-07, 16:12
The motherboard is on my test bench with no case, however there is indeed no fan nor sink on the 486DX2. Is it required for such CPU? Another point: I was wondering if the HDD could in a way or another interfere so I unplugged it and used only the floppy and a DOS disk boot to access DOS. Got the …
486 Setup freezes suddenly
Posted on 2022-06-07, 13:59
Hello all. I am testing a 486 setup based on a PC Chips M912 v1.7 motherboard + 486DX2 + 16Mb RAM. I installed also a VLB Graphic Card (Cirrus Logic 5426) and and 16-bit ISA multi I/O card to which I hooked up a 3.5 floppy and a Quantum HDD. DOS 6.2 was installed on this HDD using another computer ( …
Re: Smallest Motherboard with ISA
Posted on 2022-05-16, 20:18
Hello. Quick follow up: I emailed Vortex to see if the motherboard was still available. There were only 2 left hanging around in their stock but were not functional. No luck but thanks all for your contribution
Re: Smallest Motherboard with ISA
Posted on 2022-05-09, 07:30
Thanks all! Rasteri, the picture of the MB you inserted in your post looks interesting, but I can't find a link to the supplier's website (ICOP?) Could you please send that link?
Smallest Motherboard with ISA
Posted on 2022-05-08, 20:17
Hello. I am looking for the smallest motherboard (size around mini ITX) with at least one ISA connector. Does this exist? Thanks
Re: ISA card with Floppy controller bypassing internal BIOS
Posted on 2022-04-26, 20:36
Dionb, sorry for the late answer. Bios does not allow me to disable the floppy controller (unless setting the floppies at 'none' means disabling the controller..). There may bit a jumper on the MB to use but I don't know which one...
Re: Adaptec AHA-1542CP and Floppy
Posted on 2022-04-26, 20:13
Hello. So I have removed the jumper 3 for IRQ6 but the issue is still there. As far the motherboard, I have attached the pictures of the blueprint behind the metal cover. Taking a picture of the motherboard itself is not easy as much is hidden by the HDD and the big PSU. I have found a picture (not …
Re: Adaptec AHA-1542CP and Floppy
Posted on 2022-04-25, 21:23
PS: here is a site (read at the bottom), sorry in French http://www.ti99.com/exelvision/website/index. … e=goupil-g5-s86
Re: Adaptec AHA-1542CP and Floppy
Posted on 2022-04-25, 21:21
The CMOS is powered by a common AA type 3.6V battery that I replaced. What is very surprising is that the BIOS hard drive setting (geometry) is stored and backed up properly by the battery while the floppy settings always revert to 'None' after a reboot, even if I change the setting and save BIOS. …
Re: Adaptec AHA-1542CP and Floppy
Posted on 2022-04-25, 20:22
The computer is an old Goupil G5 286, a french exotic model made in the 90's. The motherboard is specific to this computer. It has a floppy connector and the very basic BIOS enables to select the floppy drives type. But I never managed to have a floppy working. No detection , and BIOS comes back to …
Re: Adaptec AHA-1542CP and Floppy
Posted on 2022-04-25, 17:09
Thanks. However I can't access the PC BIOS since I have installed the AHA card. The boot goes right to the AHA Bios and continues until DOS prompt, even if I pressed the keyboard key ('S' in my case) to access PC Bios I was able to access PC Bios only by removing the CMOS battery, waiting and …
Adaptec AHA-1542CP and Floppy
Posted on 2022-04-24, 17:47
Hello. I have installed an ISA Adaptec AHA-1542CP in order to use it as a floppy controller. The card is recognized and I can access its bios at boot. However my floppy is not detected. I don't see any field in the card bios related to the floppy setting for example its type (360 Ko, 720 ko, 1.4 Mo …
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