Re: AT/LANTIC DP83905 broken EPROM
Posted on 2024-02-16, 18:02
how about bending WE pin up?
Re: MSI MS-7366 V3 no post
Posted on 2024-02-16, 14:34
Nforce, I heard nightmares about those chipsets just dying randomly you can try keeping pressure on chipset radiator and then turning on
Re: Rarest CPUs?
Posted on 2024-02-16, 14:10
BitWrangler wrote on 2024-02-15, 16:13: I suspect the boards are almost as unicorny as the CPU so this doesnt use standard 386 pinout? pictures above show normal PCChips M326
Re: IDT Winchip 2a PR266 a.k.a "Weirdo"
Posted on 2024-02-15, 15:12
I stand corrected. What a weird chip.
Re: Can I upgrade from P3 Katmai (2.0V) to Coppermine (1.75V) ? (re: IBM 300PL)
Posted on 2024-02-15, 15:03
U6 LM80 is a fan controller U4 W40S01-04 is ram buffer U40 is our guy, Analog ADP3152. I disregard it at the beginning due to not enough legs for serious VRM controller, but this one supports just one phase. 1.8V and 3.5V Edit: didnt see your edit :) In order to run Coppermine you will need Slotket …
Re: IDT Winchip 2a PR266 a.k.a "Weirdo"
Posted on 2024-02-15, 13:42
no it wouldnt, Im not buying non integer multipliers. https://www.cpu-world.com/CPUs/Winchip2/IDT-W … 3DFF266GTA.html Imo more likely benchmarking software is not tuned for winchip and fails when counting cycles
Re: Can I upgrade from P3 Katmai (2.0V) to Coppermine (1.75V) ? (re: IBM 300PL)
Posted on 2024-02-15, 13:40
this is a VRM, but not the CPU VRM. CPU one is located near CPU slot. Might be U6 (seems small), more maybe chip between CPU and RAM (too far). Basically you are looking for >20 pin VRM controller, not a 3 legged transistor
Re: 286 Motherboard does not work . CMOS inoperational. System halted.
Posted on 2024-02-14, 13:02
jnemo2004 wrote on 2024-02-14, 11:57: I cannot upload here two .BIN files (Hi & LO) cant upload .bin files, zip them up
Re: Voodoo 2 Artifacting?
Posted on 2024-02-14, 06:52
Connection between TMU and one of the Ram chips connected to it, or in veeery rare cases one of the ram chips in that bank.
Re: 286 Motherboard does not work . CMOS inoperational. System halted.
Posted on 2024-02-13, 20:23
Deunan wrote on 2024-02-13, 18:49: EDIT: Do not install any batteries in place of the original one until you figure out how the charging works on this mobo. op photo shows diode already in place
Re: [Advice wanted] Pentium 3 450mhz budget soundcard + GPU for DOS / Win98 games
Posted on 2024-02-13, 18:30
bten wrote on 2024-02-13, 16:44: Do I need to replace the PSU? (it seems fine)? you can continue using it keeping in mind it will need capacitor service, or just replace all electrolytic now (except for the two big ones, those will be fine)
Re: [Advice wanted] Pentium 3 450mhz budget soundcard + GPU for DOS / Win98 games
Posted on 2024-02-13, 18:09
bten wrote on 2024-02-13, 17:36: I see some people recommend compact flash, what's the advantage of CF over a SATA SSD? 32-64GB SSD can be had for $10-15, CF has no advantages.
Re: Please help me identify this 386 or 486 motherboard.
Posted on 2024-02-13, 18:01
https://theretroweb.com/motherboards/s/cache-computers,-mini-386sx-model-345 Great find. Sticker on OPs board chipset says CACHE Computers, model on the side states ASSY 81403, over that 81404, bios identifies as Cache Computers 80403. This makes it Model 403 or 404. Highest model in theretroweb is …
Re: Vintage laptop - AT&T Globalyst 200s == Samsung Sens 700 - ? Bad ram module - how to tell
Posted on 2024-02-13, 11:51
AT&T Globalist 200S = NCR Safari 3152 = Samsung NoteMaster 486P = SAMSUNG SENS 700 https://adnoteh.ro/retrowikid/index.php/AT%26T_Globalist_200S 16MB is theoretical max, cant tell if really max without seeing whole motherboard front and back (chipset etc) looks like 200 has very similar motherboard, …
Re: Zida 4DPS v 3.1 Mainboard - COM/Mouse serial port INOP
Posted on 2024-02-13, 11:15
Afaik Bios does nothing when it comes to ps2. Its all inside keyboard controller firmware, mouse driver talks directly to keyboard controller. For serial mouse you need to make sure com port is working in the first place, connect TX and RX together with a cable, open serial terminal and type …
Re: Is there anyone in the UK that can recap old PC motherboards?
Posted on 2024-02-13, 10:30
contact GadgetUK (Retro Gaming Repairs & Mods) guy https://www.youtube.com/channel/UCRBWJ9JeJ3Q8ssn_ibii-Cg
Re: Vintage laptop - AT&T Globalyst 200s == Samsung Sens 700 - ? Bad ram module - how to tell
Posted on 2024-02-13, 08:06
AT&T globalyst ... proprietary ram expansion daughter card I feel personally called out :) When plugged in, the daughter card does sometimes show 20mb ram (4 onboard + 16 expansion) but then it crashes. Sometimes, i doesn't recognize it on boot. intermittent so most likely bad connection I'll try …
Re: 286 Motherboard does not work . CMOS inoperational. System halted.
Posted on 2024-02-13, 07:49
I dont know particular bios used on this board, but usually Keyboard is initialized first, followed by RTC. AMIT BIOS Post Codes (Prior to April 1990): 15 CMOS read/write test OK 16 CMOS checksum and battery OK 1F Ready to initialize video system 20 Video test OK 21 Video display OK It makes no …
Re: Gotek like Optical Driver Emulator - Is it possible?
Posted on 2024-02-13, 07:34
ZuluIDE shows it is possible to get a working IDE device emulator built on a RP2040. they use FPGA, at that point you can use Arduino there instead of rp2040 and it would make little difference :) It seems to be a great product like ZuluSCSI not a product, announcement but like ZuluSCISI does not …
Re: What retro activity did you get up to today?
Posted on 2024-02-13, 05:30
440BX boards should probably have buffer chips in order to use 4 sticks of RAM. A good example of this is the ABIT BX6r2. Unfortunately, these chips weren't cheap and they take up a lot of real estate on a motherboard, so most manufacturers cheaped out and didn't include them. I also remember …
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