I don't know of a specific way, but for Cirrus Logic it seems that the hardware BitBLT routine is present in GD5426 and later according to Wikipedia. I'd ultimately go for a VLB (VESA Local Bus), should be much faster.

DX4-100 is already pretty good for a 486. I'd go for a GD5429 VLB if you can find one for cheap. Being patient pays off when it comes to getting a nice retro rig. Finding one that is maxed out at 2MB VRAM (all chips present) is a nice bonus.

That's an old chipset. I'd go for a later Cirrus Logic VLB card (f.ex. GD5428) if you want a good price/performance ratio for GUI acceleration. The CPU is also utilized in GUI rendering, so upgrading that might help too.

Sorry to break your happiness, but this board is in really bad shape. Look at the pins on the UMC chip to the left of the PCI slots. There's a huge deep scratch in the PCB, and the chip pins are crushed. This probably means that COM1/COM2/LPT1/LPT2 will have problems. I'd try to straighten up or …

Texas Instruments TravelMate 4000M laptop from around 1994-1995 - Intel 486DX4 100MHz - MediaVision Jazz16 16-bit sound card w/ OPL3, SB Pro emulation, MIDI out (tiny connector) and built-in speaker - 2x PCMCIA slots driven by a Cirrus Logic PD6720 chip - Active matrix 640x480 64K 10.4" screen - …

Record the sound if you still have the drive in, I'd like to hear! He linked an audio clip in this thread. It sounds like a beep that is drifting in pitch, which makes me believe even more that it's actually the coil, head and platter making noises from the drive trying the best it can to move the …

Well, more like a coil together with the stuck head on the platter, making vibrations. Also if that was supposed to be an error code sound, then it's the weirdest one I have ever heard. It's possible that you'll have to eat your platters after all. Why don't you remove the PCB from the drive and …

It's most likely a memory expansion interface. You can see traces from it snake its way to the SIMM slots. Looks like it's compatible as a normal 16-bit ISA slot too, since you see the left side of the 16-bit connector being tied up with the ISA bus.

It's possible that the head is stuck, and thus the coil acts as a crude speaker. Some HDDs probably have a speaker that annoys you when the start-up diagnostics failed, though...

I actually tried that first, but it didn't help for me.

Sorry for bumping such an old thread, but I made a discovery here. I have this Texas Instruments 4000M (TM4000M) laptop with a Phoenix '92 BIOS, and it gets stuck when trying to boot from a CF. You can run fdisk and format the drive from a floppy, but not boot from it. However, if you install …

So I bought a CT2940 w/ real OPL3 on eBay, and before it gets shipped to me (which will take a while) I have to ask: Does this card have the DMA "click/pop" bug like the old SB16 cards? And does it have the Vibra "ringing" problem? It's a Vibra CT2502 chip after all... Also are there any downsides …

Regarding the screen: The machine seems to be limited to a palette of 222K colors. The weird image you get is because of a technique callerd 'dithering'. To make it non-dithered, set it to 222K colors in the BIOS (hold ESC while rebooting to enter BIOS) and use 256 colors in Windows. This is a sad …

Yup, the one on the CD is v2.20, the one I linked was 2.19. Thanks! Will test it out. EDIT: Works, but I still get "Can't load Universal Draw Handler" when I open Drivers in Control Panel.. I reinstall Win3.11 every time then install the driver. Weird!

Alright I found it, finally! From diamondlegacy.com through waybackmachine... I uploaded it here: http://16-bits.org/etc/ftupci765tv_win31x_drv.zip Extracted from 765219a.exe and 765219b.exe "Stealth64 Video 2xx1 Windows 3.1x drivers v2.19" EDIT: kixs: I'll have a look if the one in that CD is …

I'm looking for Windows for Workgroups 3.11 drivers for this card... Tried the Trio64V+ drivers from the S3 legacy driver page, but I get a "Universal Draw Handler" error from it in the control panel. This is the card that has the S3 Trio64V+ chip. This is NOT the same as "Diamond Stealth64 Graphics …

I replaced two caps that measured a pretty high ESR, and I also resoldered all the CPU/cache pins and some other ones that weren't looking that good. It changed nothing, as I expected. feipoa: 0) The BIOS identifies the CPU as 486DX4(P24C), so I assume it does. On the other hand, it would support …

I have a mysterious problem with my UC4913 ver2.0 486 motherboard when using a DX4 (it's fine with DX2)... It's a Socket 3, but it doesn't have a voltage regulator. I tried to short the sense pins and measure the vcc, and it's indeed 5v. The CPU is correctly identified as a DX4 in the POST screen. …