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Footage of an early prototype of Super Mario Kart recovered from Nintendo internal files. At this…

Supper Mario Broth about 7 days ago

Footage of an early prototype of Super Mario Kart recovered from Nintendo internal files. At this point, no CPU driver behaviors were implemented, and only Mario, Luigi and Bowser were available racers.Single-player mode would then consist of the player &l …

PC 486SX (ao486) • SAVIOR.EXE: A general solution for backing up DOS saves

MISTerFPGA about 9 days ago

Work in ProgressThis is a design document specifying the functionality of a program that is not finished. I've implemented a lot of the functionality described below, but not all of it, and there are probably a lot of bugs. I can make an alpha version ava …

General Discussions • Z80 end-of-life announced

MISTerFPGA about 18 days ago

After nearly 50 years in production, the last of the original Z80 CPU family has been declared end-of-life, apparently because the fabrication process is being retired. This doesn't have any immediate practical impact for most retrogaming/retrocomputing p …
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Design from a promotional 2000 IBM T-shirt featuring Mario. This is referring to the fact that…

Supper Mario Broth about 23 days ago

Design from a promotional 2000 IBM T-shirt featuring Mario. This is referring to the fact that Nintendo commissioned IBM to develop the Gekko, the CPU used in the GameCube, which was a modified version of their existing PowerPC 750CXe processor.Main Blog | …

General Discussions • Nuked-SC55 and emusc: Roland SC-55, emulated, 2024 Edition

MISTerFPGA about 1 month ago

There is two emulators in the works, one has just released an early version.First emulator here:https://github.com/skj... my understanding this emulator, emulated the first sc-55. Then we have:https://github.com/nuk... emulator, …
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Development files for Mario Kart 64 contain an early version of the game’s item roulette graphics,…

Supper Mario Broth about 1 month ago

Development files for Mario Kart 64 contain an early version of the game’s item roulette graphics, which reveals some items that were scrapped during development, including:-a Yoshi egg, which was usable only by a CPU opponent Yoshi in Super Mario Ka …

Aes blue screen but doesnt boot

Neo Geo Forums about 1 month ago

Hi folk, i have some troubles with an aes 3-4 console, without cart i obtain a cool blue screen, if i dont wrong its mean no game in slot but system is working, with neo-diag, all test passed. (z80 no tested) and with unibios logo unibios 4.0 is visible bu …

PC 486SX (ao486) • 0MHz DOS Collection 2024.03.20 Released

MISTerFPGA about 2 months ago

Another DOS game collection? Why not! This one has a slightly different focus than Exo/Flynn, and DOSContainer projects.We originally published the “Special Sauce v0.0.1” collection a little while ago, and Limi (of AmigaVision fame) reached out to say …
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IWM reverse engineering

Apple Fritter about 2 months ago

After probing the waters in this thread: https://www.applef... finally got enough motivation to proceed with reverse engineering the IWM myself. I'm well aware that other have done that long ago, …

Blank screen c64 ICs are all good, now what?

VCFed about 2 months ago

I am repairing a 250425 board that I have socketed all of the chips and confirmed through trying them in another working board that they are all good. The problem is a blank screen almost 100% of the time. On 2 or 3 occasions while probing around with an …

GOTEK, PDP-11, and MicroVAX2

VCFed about 2 months ago

Hello All, I have a couple of systems that I am working with... one is a PDP-11/53 and the other is a MicroVAX2 (KA630 CPU), both in BA23 chassis. I have been experimenting with the GOTEK floppy emulator running the latest version of FlashFloppy, and I h …
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KA640 CPU no operation - "F" on Console Panel

VCFed about 2 months ago

Dear All, I have recently got a Microvax 3400 in nice condition. Unfortunately is the KA640 CPU board stuck in "F" condition (LED on Console Panel) with no output on the serial console. Anybody maybe some ideas? …

More storage treasure: KDJ11-D/S (PDP11/53?) in H9275A cage with analogue, async, SCSI, ether

VCFed about 2 months ago

I'm in the process of documenting what I've got. It's a KDJ11-D/S with 1.5 MByte RAM, very clean and shiny. Apparently that's the CPU for an 11/53. I've had it in storage for something like 20 years, never powered it up. It …

Commodore PET 8032 with graphics keyboard - shipping to EU only - 500EUR

VCFed about 2 months ago

4 DRAM memory chips replaced until PETTEST completed 16 full memory test cycles. "New" CPU and CPU socket, two new filter caps, all from aliexpress. It has some rust over the oscillator cover and inside the case, some dust here and there. Case sa …

Sun386i. Overdrive processors: Why don't they work?

VCFed about 2 months ago

Ok, so 35 years ago the Sun386i was pretty much abandoned as a platform. Which is not totally fair, it's actually a nice little system with an impressive framebuffer, network, all the bells and whistles. It's biggest problem is the CPU is just do …

What do you guys use for reliable benchmarks for modernish CPU's?

VCFed about 2 months ago

For example, I have an E5 2667 V3 XEON (8C/16T) and was comparing it to a desktop I7-5960X (8C/16T) same socket LGA 2011-3 https://cpu.userben... …

Ultimate Pentium Build

VCFed about 2 months ago

Please educate me! I have been on a bit of a kick building awesome retro machines, my 486 Builds hve trajected towards some nice results, and the CoreDuo strategy is progressing nicely. So please feel free to tell me about your ultimate pentium builds, I …

Looking for FDC timing chip or substitute for TRS-80 model 4 Gate Array

VCFed about 2 months ago

I'm in the processes of restoring a TRS-80 model 4 gate array and have located one of the problems causing the system to hang at startup and only show garbage on the screen. The FDC timing chips is dead and sends a hold signal to the CPU which was also bad …

486 Troubleshooting assistance... data lines all high etc

VCFed about 2 months ago

Hello. I have a Gigabyte GA486-US motherboard, which looks exactly like this: ... GA-486US Gi... GA-486US is a motherboard based on the UMC UM82C480 (386/486 PC Chip Set) chipset. Get specs, BIOS …

FS: CPU / Parts COLLECTION - 100+ INTEL/AMD Pentium, Overdrive, 486, 8080, Turbochip, ALL VARIANTS

VCFed about 2 months ago

Selling a very large collection of CPUS , this is everything from an 8080 all the way to Pentium II. This is a part of a very large collection of computer components, everything from motherboards, sound/gfx cards, HDDS, IO Cards, add-ons, software and more …
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Commodore 16 not booting/Fault Screen

VCFed about 2 months ago

Any idea what might be causing this? I've replaced the TED (new/old stock), PLA (PLAnkton, CPU (6510 w/ adapter), Kernal ROM (had to because of the cpu). This screen has shown up before, but it used to boot at least some of the time. But it was glitch …

Anyone Familiar with a TK TK83305-4N-D-03 Motherboard?

VCFed about 2 months ago

I just purchased a computer with this system and had a question about processor configuration. I was able to obtain some information about it with the documentation here: TK TK83305-4N-D-03​ Appa... it can use a solder on CPU (which mine has, an …

FS/FT: HP Ultra Slim Dock 2013 Docking Station (D9Y32AA#ABA)

Apple Fritter about 2 months ago

I have an HP Ultra Slim Dock 2013 Docking Station (D9Y32AA#ABA) in need of a new home.  It is in cherry condition, and works perfectly.  Has PSU, no box, no docs. Asking $15  USD (obo) plus shipping.  Will ship anywhere, including APOs. Will accept t …
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Technical questions • ULA, bus conflicts and the expansion devices

Defence Force about 2 months ago

I've been tinkering with the expansion port and grown interested in the bus phases of the Oric Atmos and how its supposed to work. The ULA runs the show on the bus of course, and divides the Phi2 into 3 access "slots", two for itself for running the graph …

recovering an SGI indigo

VCFed about 2 months ago

hey all, i have an unhappy indigo in my collection- i recently replaced the CPU battery since the diagnostic LED was yellow and i could get nothing on my display. this fixed the issue with the yellow LED and the CPU seems happy from the outside, but now i …