Category Archives: Modification

Modification

Neo Geo MV1FZS 5V and Stereo Mod

When I finally fixed my consolized MV1FZS last month and was able to play some games again, I notized that it outputs mono sound only. It is now time to make some some additional modifications to it.

5V Mod

MVS boards need both 5V and 12V voltages, and 12V is used for the audio amp only. As I’m going to add a new stereo audio circuit, there is no need for the 12V feed anymore. This consolized MVS draws the 12V from the now obsolete XL6009E1 DC-DC converter:

XL6009E1 DC-DC converter
XL6009E1 DC-DC converter

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Neo Geo MV1FZS Battery and Backup RAM Error Fix

After having a great time with my MV2FS I was looking for something more compact that I could use in the living room. I came across a pre-consolized MV1FZS and played the entire Neo Geo library with it.

Consolized MV1FZS
Consolized MV1FZS

Then it suddenly stopped working:
BACKUP RAM ERROR
ADDRESS WRITE READ
00D00000 5555 B255
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Tennokoe 2 RGB Output

2018 will be a great year for the PC Engine. Terraonion, the maker of the NEOSD cartridge, has announced the Super SD System 3 add-on.

Unfortunately I won’t be able to use it with my Duo-RX and GT, and the SuperGrafx is too bulky and ugly to take it out for gaming. I ordered a cheap CoreGrafx from Yahoo! Japan Auctions which came with a Tennokoe 2 backup memory device attached to the expansion connector.
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Neo Geo MV2FS at Home

Neo Geo games and hardware have been a part of my life for many years. As I was looking at store displays during the early 90s, I was amazed at how huge these game carts were in comparison with other consoles, such as the Nintendo GameBoy.

In the late 90s, the emulators NeoRAGE and NeoRAGEx introduced me to the world of Neo Geo and arcade emulation. At that time, MAME didn’t yet have the capacity to emulate those games properly and at a decent speed. Later on, when MAME finally became a useable Neo Geo emulator, it became quite easy to add new released games and dumps to the source code, and play them as well.
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GameCube with GCVideo, Qoob Pro and IcedCube Case

This is a GameCube that I acquired recently. It has a true HDMI output and blue controller ports.

HDMI GameCube
HDMI GameCube

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Sega Dreamcast GDEMU SD Card Tray

Last year I replaced the broken GD-ROM of my Sega Dreamcast with a GDEMU. While it works great and does everything as it is supposed to do, there is a large open space where SD cards tend to get lost:

Sega Dreamcast GDEMU 06
Sega Dreamcast GDEMU 06

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Switchless NESRGB for AV Famicom

This modification adds a NESRGB and a NESRGB-IGR (in game routines/in-game reset) daughter board to a Nintendo AV Famicom.

First look of the open AV Famicom and the NESRGB kit. There is a lot of assembling to be done.

NESRGB for AV Famicom
NESRGB for AV Famicom

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NEC PC-9821 and the Framemeister

The NEC PC-9821 computers output a very unusual resolution that most western monitors struggle with: 640 x 400 @ 24 kHz. I tried at least half a dozen monitors of all types and ages and none of them was able to display a picture at all (except an “out of range” message). Video scalers like the DVDO iScan VP50 Pro don’t recognize the signal either. Some sources claim that the cheap GBS-8220 converter is able to convert the signal – that is only partially true. You can see a stuttering picture that eventually becomes clear when you start the Windows 98 Desktop, but that doesn’t work in DOS.

Of course you can buy a special converter like the Micomsoft XPC-4, that will cost you 300-400€ though. There are other solutions:
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Atari Jaguar Power/Sound Fix and Rotary Controller

The other day I prepared my Atari Jaguar to build a rotary controller for Tempest 2000. I hadn’t used it in a while and accidently picked the wrong power supply – smoke was rising immediately from the console.

The culprit was easily found, chip U38 (MC34163DW):

Toasted U38 (MC34163DW)
Toasted U38 (MC34163DW)

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Two Donor Carts for Sega Pico Flash

Found two more donor carts for use in a Sega Pico flash cart:
The Lion King: Adventures at Pride Rock and Magic Crayons, both “Assembled in Mexico”.

Sega Pico Donor Carts
Sega Pico Donor Carts

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