All posts by rosewood

Super Famicom Super CIC Mod

Another quick mod – I ordered a Super CIC board by borti4938 along with the SD2SNES upgrade board from VideoGamePerfection. It’s time to upgrade my 2CHIP Super Famicom.

Super Famicom 2CHIP PCB
Super Famicom 2CHIP PCB

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SD2SNES Rev. E1 Upgrade to Rev. H

This is an old rev. E1 SD2SNES cart, that I’ve bought several years ago from Krikzz.

SD2SNES Rev. E1
SD2SNES Rev. E1

SD2SNES did undergo some revision changes in the last couple of years. First there was Rev. F, that fixed some interference with 1CHIP units. Then there was Rev. G, that fed the DAC with +5V to improve the MSU-1 volume (and added some noise). And finally in Rev. H, the +5V change was reverted and an opamp added to fix the MSU-1 volume for good.
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Super SD System 3 C60 and Audio Buzzing Fix

Two quick fixes for my Super SD System 3 v2.

I inverted the orientation of the C60 tantalum electrolytic capacitor:

SSDS3 C60 fix
SSDS3 C60 fix

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Neo Geo MV2FS Cartridge Slot Covers

This is a quick fix for dusty environments, to have at least some kind of protection: MVS Cartridge Slot Covers.

MV2FS Cartridge Slot Covers
MV2FS Cartridge Slot Covers

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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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Sega Dreamcast Karaoke

The Dreamcast Karaoke is probably the most useless Sega add-on. It serves no other purpose than to accompany the Sega Kara software, which is useless as well.

Back in the days you were able to download and sing thousands of songs, then in 2006 the servers were shut down for good.
Without the servers there are no songs – you can still connect microphones to the Dreamcast and listen to your voice with Sega Kara, change the volume and add effects, but that’s about it.

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NEC PC-9821 BIOS Translation

Changing settings in the BIOS of a japanese computer can be dangerous if you don’t have any knowledge of the japanese language or don’t what you’re doing. I don’t have that much knowledge of the language either and tried to translate the BIOS.

This is how I did it: I connected my PC-9821Xe10 with a sync combiner to the Framemeister and grabbed a video of the selection of each and every BIOS menu item. Then I converted the frames of the video to image files. The images were then cropped and converted into grayscale negatives to be processed by an OCR engine. Most of the output was gibberish and every single line of text needed manual processing. The japanese text was then fed into the Bing and Google translators and some common sense added to the output.
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