Recent content by furan-

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Information on this card can be found here: http://www.applelogic.org/files/AppleIIVideoOverlayCard.pdf I'm interested in finding an Apple II Overlay card because it contains a duplicate of the IIGS display hardware, and everything the IIGS hardware can do can be taken advantage of on that card...

In the past I worked on the NT family of OS software for Microsoft for a good 15 years. As a hobby I collect old computers, and make random FPGA-based hardware. I have been thinking about writing some more PCI graphics drivers, but after reading around, I'm wondering if I should bother. I...

Forgot to update thread - PM sent, and today payment sent.

Life got busy. Still looking into what I can do to get a faster BridgeBoard!

Hi, As per subject - this is sort of a "want to buy" but really if I can get proper measurements from someone with a caliper I can probably hunt down/facsimile something myself. Tried searching first and I found that at least the height is 17mm - does that sound right? I'll keep digging too...

Found Found Found offline. Thanks!

Nope, sorry, I've got the NEC silkscreen. - - - Updated - - - I'm sorry, but unless you have an account with more feedback to sell to me from, I would rather wait until you have made some purchases here and built up feedback (as I am). Thanks for understanding.

Hi, I've been collecting MIDI wavetable boards and external units for a while now. I'm not sure anything will ever beat my Roland LAPC-I, but I'd really love to find the SCD-15/SCB-55. My understanding is that the SCD-15 has the left and right channels fixed (from below) but I can easily do the...

Hi, Things have been pretty busy on my side, but I've got a bit of a more professional build now for the upgrade. It uses some rare parts so I'm not sure how easy it will be to reproduce.

I used the connector on the bottom of the viper-jet (not soldered but press-fit) press-fit on the same footprint with some leads, so I can float a cpu and attach it to a CPLD (well really an FPGA) and make it speak to a 486 (just to get better fpu).

Today's gets: (A2386SX work) VIPER-JET 386SX to 486SLC upgrade from Japan. Snaps on top of the 386sx. Jumper switches between the onboard CPU and the upgrade. I am considering putting my "fast" IBM 486slc2 that does 66mhz on it, and messing with the multiplier MSR to see if I can get 75mhz...

I replaced the bus crystal and bumpers/resistors on my board (which had a bus and dma output, of which I had already selected to use the bus clock) with a 14.318mhz oscillator and now get bang on 14.318mhz shortly after the bus comes up. It first starts at 8mhz, and then switches over, and I...

On video card stability - with this 286 board, the Speedstar 64 sometimes hangs at boot, as does my Mach64, as does all of the cirrus logic boards in general, that I have. I started looking into this: http://www.os2museum.com/wp/the-isa-osc-mystery/ I measured the clock speed on my bus as 6mhz...

Yay, glad you're still here I lucked out with the Kingston upgrade board for 286 -> 386, and that the 286 board I bought actually works. I'm not sure how much benefit the "l2" cache will provide, and if having that cache and the onboard cache will lead to coherency issues, but will see. One...