ctrl.alt.rees

July 30th 2020, 10:21:19

Holy moly, @TheRetroHQ Jaguar GameDrive flashcart is a wonderful piece of kit!

: RetroHQ :

July 28th 2020, 20:01:11

Made a handy shell for the mwp-606 adding EIC connector and switch!

: RetroHQ :

July 28th 2020, 12:24:18

Well, I wasn't expecting this. Twin Cobra starting to boot without the bad sound sram in there! Replacement ordered... 😄

: RetroHQ :

July 28th 2020, 08:18:42

Tracing through the video generation circuitry, there's something happening. There seems to be some kind of video enable signal which is disabled and floating high, forcing low gets some crap on the screen with good sync, so *some* of it is working.
What's next in the arcade PCB lucky dip?! This one has some water damage, needs a good clean before powering up...

TAITO original at least! 😆 TP011

: RetroHQ :

July 27th 2020, 17:55:18

Ok, so it's Twin Cobra. Now that's worth saving... 😄

Given it a clean up, one of the legs of the EPROMs snapped off while pulling it due to corrosion. New leg from the dead Final Fight SRAM transplanted. 😄

68000 and Z80 running, but no video or audio.
What's next in the arcade PCB lucky dip?! This one has some water damage, needs a good clean before powering up...

TAITO original at least! 😆 TP011

: RetroHQ :

July 27th 2020, 16:12:33

What's next in the arcade PCB lucky dip?! This one has some water damage, needs a good clean before powering up...

TAITO original at least! 😆 TP011

: RetroHQ :

July 27th 2020, 15:52:50

Another arcade board fixed! And Final Fight, too... 😄

Apparently you can get away with a 70ns SRAM in place of the 35ns used for the linebuffer.

Need to give it a proper test, may get some glitches and need to replace with a faster SRAM, but looks solid to me!

: RetroHQ :

July 25th 2020, 15:49:36

I never knew I even had final fight! May be a bootleg? Graphic corruption on sprites...

: RetroHQ :

July 25th 2020, 12:00:03

Woot! Running fully -- no audio was as simple as the volume pot being oxidised. Quick twiddle and we're good!

I felt like @GadgetUK164 with my systematic sleuthing. 😆 I might actually have to video some repairs, I find watching Gadget's repair videos bizarrely relaxing. 😄
Aha! 74LS08 replaced and it's now running! Although no audio, so more to track down...

: RetroHQ :

July 15th 2020, 09:06:06

Now that is remarkably cool. And I do like lego.... and it would look great on display.... argh! I bet it's going to be expensive.
LEGO has created a 2,600-piece replicate of the NES. It's crazy accurate and even has an interactive TV displaying Super Mario Bros

: RetroHQ :

July 13th 2020, 20:02:27

The ZX81 was obviously waaay ahead of its time! Wipe that baby down with isopropyl alcohol and you’re virus and bacteria woes are no more.
These horrors are the worst thing that's ever been invented.

: RetroHQ :

July 13th 2020, 19:58:44

Top tip!
I was looking for precision round socket pins for the low profile speeddos adapter. No chance to find a cheap solution. Today, I found out, that it is fairly easy to push them out of the precision sockets with tweezers from the bottom side.

: RetroHQ :

July 12th 2020, 21:10:07

Very fair overview! The NGP system is tied to flash memory very tightly, which is why I use it, but the flash itself is slow to write to, hence the slow write times. And yes, that’s why it has as large a flash memory as I could fit in the device! 😉
I checked out the NeoPocket by @TheRetroHQ for the @SNKPofficial Neo Geo Pocket Color! Thanks @StoneAgeGamer for the hook up.

youtu.be/lA3DN2bKxwU

: RetroHQ :

July 9th 2020, 15:40:50

If anyone is after a NeoPocket GameDrive cartridge, they are in stock at both @StoneAgeGamer and @DragonBoxShop right now!



Barawer

July 3rd 2020, 12:27:37

Just updated my NeoPocket GD case to the new style case.
Very easy to do, and its a well worth upgrade. It feels better, looks more like a real cart, and its easier to remove.
Thanks @TheRetroHQ!

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