Re: What am I looking at?

Posted on 2024-05-02, 23:18

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It hooks up to the Bus Cycle Status pair, Hold, Reset, Clock, Memory/#IO on the 286 and the DMA Request and IRQ signals from the ISA riser. I'd assume it fixes something to do with generating Hold for the CPU when a card asserts a DMA request.

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Re: Exercises and Example Programs that teach the C Programming Language

Posted on 2024-05-02, 18:38

by

by pancakepuppy

in Milliways

in Milliways

I enjoy "C: A Reference Manual" by Harbison & Steele. The 5th edition is very easy to find online in PDF format. Covers differences in C99, C89, and neanderthal C, lots of syntax examples and practice questions to test your knowledge.

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Re: What do the letters at the end of the AMD k6-2 model mean?

Posted on 2024-02-07, 23:42

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

For K6-2/K6-III parts: First letter - Package Type (A = 321-pin PGA, B = 360-pin BGA, I = 349-pin BGA) Second letter - Operating Voltage (U = 1.4V - 1.6V, T = 1.5V - 1.7V, P = 1.6V - 1.8V, N = 1.7V - 1.9V, M = 1.8V - 2.0V, C = 1.9V-2.1V, D = 2.0V - 2.2V, F = 2.1V - 2.3V, G = 2.2V - 2.4V, H = 2.3V - …

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Re: Bought these (retro) hardware today

Posted on 2024-01-19, 00:44

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Number Nine Imagine 128 is a videocard. I suppose, this empty socket will accept another 512KB of VRAM for Cirrus Logic DOS part. I'm really curious about this secondary memory socket/footprint, since at first glance it looks like it connects directly to the Imagine 128 chip. Macintosh Imagine 128 …

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Re: What is this CD-ROM drive?

Posted on 2024-01-08, 19:21

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Media Vision CDR-H93MV? Filename cdr-h93mv.jpg File size 188.26 KiB Views 448 views (Image snagged from eBay)

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Re: Motherboard (sometimes) turns itself on while inserting a PCI card

Posted on 2023-12-13, 00:28

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Could be asserting a power management signal (like PME#) which has some capabilities to wake the system

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Re: Voodoo 2 with weird/strange/different connector

Posted on 2023-11-27, 23:14

by

by pancakepuppy

in Marvin \ Video

in Marvin \ Video

Voodoo2 for Macintosh?

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Re: MSI K8N Neo2 MS-7025 (v1.X) Capacitor Replacement Questions

Posted on 2023-09-08, 16:13

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, the capacitors next to the toroid inductors are part of the CPU voltage regulator output filtering. You can get into the weeds of component specifications but generally speaking, if a capacitor is 1800 uF and 6.3V it will probably be better than what's in there now. Low ESR and high ripple …

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Re: Help ID 486 mobo with initials T.W.

Posted on 2023-09-07, 17:00

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://theretroweb.com/motherboards/s/jetway-j-403tg-v2.0 ?

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Re: Unidentified Socket 3 motherboard. (Probably IBM)

Posted on 2023-08-24, 17:57

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://theretroweb.com/motherboards/s/atandt,-inc.-at-and-t,-inc.-globalyst-550-c Has a lot of similarities with the AT&T Globalyst 550 including the security/speaker/LED headers near the cache slot. That board also has a J53V jumper for CPU type selection in its jumpers manual. I would think this …

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Re: A useless short analysis on PCIX to PCIe bridge performance on Tualatin

Posted on 2023-08-09, 20:53

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Could always run lspci -vvv on your system and look for a "PCI-X Bridge Device" entry in the capabilities list of the host PCI bridge(s). No entry, no PCI-X. Personally, I don't think any Pentium 3 system that isn't a Compaq ProLiant DL760 Generation 1 has them. "PCI-X System Architecture" from …

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Re: Lets make new M919 Cache sticks?

Posted on 2023-08-02, 23:41

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, to my knowledge there isn't available anymore. But Pancakepuppy have made the design freely available. It take 6-8 pieces to be reasonably priced. You should count yourself (already 4 on this page), if there is enough people i can order all the material and PCB to make these. Be aware it …

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Re: Network not working on T5710

Posted on 2023-07-19, 17:48

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you tried statically assigning an address that isn't currently leased out along with correct subnet mask and gateway and see if you can ping another device on your network?

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Re: Lets make new M919 Cache sticks?

Posted on 2023-02-28, 20:16

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The 1MB cache stick works great, even with the fastest timings at 40 Mhz. Doom changes from 1276 realtics to 1239 with the larger stick, so there is a measurable, but not exactly noticeable improvement over 256KB. Quake changes from 16.8 to 17.8 FPS. That's noticeable, and a 6% increase is about …

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Re: Causes for common VGA output artifacts?

Posted on 2023-02-17, 18:26

by

by pancakepuppy

in Marvin \ Video

in Marvin \ Video

Dark smearing across the screen: Saw this on a GeForce 256 and have heard from a few other people about their GF256s doing this as well. I'm not sure about the root cause, but I think it's DAC degradation. I experimented with fixing it by replacing the VGA connector and doing RGB signal buffering …

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Re: What is PCI-X?

Posted on 2023-02-01, 01:56

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here's a fun one: The Matrox Parhelia with the 64-bit PCI connector isn't PCI-X. We can tell this a few ways: 1. The big chip on the back is a PLX PCI6154, which is a plain old 66MHz 64-bit PCI bridge 2. PCI-X cards have a signal called "PCIXCAP" on pin B38 which is tested by the source bridge at …

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Re: External cache stuck on 8MB stick, but not on 4x4MB

Posted on 2023-01-31, 00:45

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Santyago wrote on 2023-01-31, 00:35: Oh... possible... Is possible determine they are EDO ? https://ibb.co/stmcN3G I will try buy another The HY5117804B DRAM parts are EDO.

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Re: Power Supply for Dual Athlon MP

Posted on 2022-12-30, 00:42

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I haven't had any issues with my Tiger MPX system (also dual 2800+s, Radeon 9700 Pro.) I'd worry more about 5V rails if the board didn't use 12V for CPU power.

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Re: Matrox m3D PowerVR Graphical Corruption - Has the card gone bad?

Posted on 2022-12-06, 17:02

by

by pancakepuppy

in Marvin \ Video

in Marvin \ Video

Have you done any pinching on the memory or graphics chips while it's running to see if the lines change? Can be a decent indication of a broken solder joint that needs touching up.

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Re: Lets make new M919 Cache sticks?

Posted on 2022-11-21, 17:34

by

by pancakepuppy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rtstaley wrote on 2022-11-19, 21:18: pancakepuppy wrote on 2022-03-22, 23:29: crazytiti wrote on 2022-03-22, 23:08: Hello, any news about making the cache sticks ? Been working on getting them sent out to interested parties, I'll message you before too long 😀 Hello Pancakepuppy, do you have any …

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