Re: 486 Motherboard missing PAL chip
Posted on 2020-11-16, 19:53
PAL chips are programmable, so you would need to have its copy... (AFAIK)
Re: XT clone motherboard not accepting -12V rail
Posted on 2020-11-15, 20:18
Also if that motherboard has integrated serial port controller, it could be broken and shorting -12V (they usually use negative rails, especially -12V). EDIT: I also had a problem with Toshiba T3200SXC portable when connecting improperly wired mouse to serial port would cause massive voltage drop on …
Re: Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-15, 17:54
OK about the rebuild, good luck and do you plan to add the 2nd CPU as well? Yes, i just hope I will get another slot adapter soon. I am now using SL5XL P3-S 1.4GHz, i have second SL6BY P3-S 1.4GHz, so that's a different stepping but the same speed and cache. I wonder if it will work, or would I …
Re: Toshiba libretto 50ct how to install win98 "the legal way"?
Posted on 2020-11-15, 15:44
Hi, Libretto also had a bigger dock (PA2718U) with additional PCMCIA on the bottom, so you could probably use both of them (but I actually didn't try it). I'm not sure if PCMCIA CD drive would work in DOS without special drivers. Probably these laptops just came with preinstalled OS. It is also …
Re: Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-15, 15:29
Do any values change as you plug/unplug fans and if so which ones? I may be able to deduce what is what if you post a screen shot of what the BIOS reports so please do this. I put that system aside for a moment, I ordered new PSU and heatsinks for the CPU because I was running it with a tiny …
Re: Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-14, 23:56
Update: Mainboard was able to detect 1024MB of RAM after trying to use different sticks, but when I used more than 2 sticks i got black screen after changing any BIOS settings and board refused to boot until CMOS was cleared. I will try to get 4 identical sticks, or two 512MB sticks, maybe it will …
Re: Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-14, 22:35
Sure, I will try to use whole gigabyte of RAM with this board. Currently I am trying to inject Tualatin microcodes with CTMC and Award Bios Editor. If I get everything to work I will post the results. There are no other Winbond chips. There is a programmed GAL next to it and some logic chips, there …
Re: Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-14, 21:44
Thanks for checking the logs. Yes, I had three DIMMs installed, and they were not detected correctly. First I tried populating 4 banks with 256MB modules (8 chips on each side of stick). With four modules BIOS detected 640MB? or so. With three it detected 512MB, and in such configuration I saved the …
Re: XT clone motherboard not accepting -12V rail
Posted on 2020-11-14, 19:51
Maybe there are some shorted capacitors or other components on the -12V line?
Re: Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-14, 19:20
Thanks for the answers, There is Bios Patcher 4.23, which works for Award BIOSes . See https://www.vogons.org/viewtopic.php?f=46&t=48967 Be careful, though. It can create a non bootable BIOS. Make sure you can recover from a bad flash (by hot flashing or preferably with an EEPROM programmer) . Some …
Tualatin BIOS update for Tyan S1834D (Tiger 133)
Posted on 2020-11-14, 00:57
-- update: here is somehow-working version if anyone needs it /at least in my board, no warranties/ -- 1834v105TA_mod1.zip ---- I have a dual-cpu Slot-1 Tyan S1834D Tiger 133 mainboard with Via 694X chipset. I just sucessfully modded MS6905 Master 2.3 slotket and booted that mainboard with one SL5XL …
Re: VGA Capture Thread
Posted on 2020-11-13, 12:44
It is also unlikely that it supports 70Hz input (though not impossible). EDIT : the price looks low enough that risking it might seem like a good idea, but considering that 60$-100$ gets you a known working and good quality solution like the Datapath E1S (albeit PCI Express, not USB), I would …
Re: VGA Capture Thread
Posted on 2020-11-13, 01:52
Does anyone have experience with these no-name $30 VGA to USB 2.0 capture devices? https://aliexpress.com/item/4001339740771.html here you can see PCB, but not much detail and the chip is under heatsink Filename He39a7ab937f24be3b92d40d2ed6edfa6d.jpg File size 130.02 KiB Views 2034 views
Re: What are people doing for cheap cases these days...
Posted on 2020-11-06, 01:59
Chieftec makes very simple cases. Chieftec CQ-1B-U3-OP, Chieftec XT-01B-OP, Chieftec HT-01B are some examples. They are available in almost every store in my country, computer labs use them often, but I don't know if they are available outside of Europe. /edit: i also found this one https://www. …
Re: 80386 BIOS image collection
Posted on 2020-11-01, 14:28
#72 Manufacturer/Identifier: Toshiba T3200SXC Chipset: - BIOS/Version: 012C on the sticker, V1.30 in diag program
Re: The quest for the perfect retro laptop: a saga
Posted on 2020-10-27, 20:51
Guys, i was checking different old laptops and found that some dude made a proper scaling patch for old Toshiba: https://www.vogons.org/viewtopic.php?t=61714 I wonder if such thing exist for Savage S3? Oh, thanks for that :) works great with my Libretto 70CT. Works even with Windows games, like …
Re: Hi! i have to know the power switch pinout of a AT power supply
Posted on 2020-10-27, 16:27
If you use ATX power supply and this adapter you can safely use any switch, because there is no high voltage. But that switch cannot be momentary, it must hold its position after pressing. You can use a switch like this, you should be able to buy it in any electronic store for few cents. 4 pin …
Re: Hi! i have to know the power switch pinout of a AT power supply
Posted on 2020-10-27, 15:42
These switches usually look like this: Filename 61+gHAapu8L._SL1500_.jpg File size 80.25 KiB Views 2000 views Maybe something like this also could be used: Filename 71rALSX30uL._SL1500_.jpg File size 77.12 KiB Views 1999 views
Re: Hi! i have to know the power switch pinout of a AT power supply
Posted on 2020-10-27, 15:09
You have a pushbutton in that ATX case? It can not be used for turning on AT power supply. There is dangerous 120/240V on AT power supply wires, and a special isolated switch must be used.
Re: What retro activity did you get up to today?
Posted on 2020-10-27, 14:32
I just found out that my old, 2008 HDV camcorder - Canon HV30 is perfectly suitable to be used as a soldering microscope :) its macro possibilities are absolutely amazing, you can focus at 0mm distance (literally touching the glass), you can mount it more than 10cm above the board leaving enough …
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