Capcom CPS2 Digital AV Interface Firmware Update

Last weekend, marqs has released a new firmware for the CPS2 Digital AV Interface. The new firmware enables changing the output resolution with the Volume – and + buttons. The current functions of these buttons (scanlines and vertical offset adjustment) have been removed.

When I installed the AV interface last year, I wasn’t very happy about the 8 missing lines in the default 1920×1080 resolution. I was hoping to have a 1920×1200 Line5x format one day, similar to the OSSC. This is now reality: By pressing Volume +, I can change this video output to this format.

Continue reading Capcom CPS2 Digital AV Interface Firmware Update

Puhui T-962 IR Reflow Oven Modifications

The Puhui T-962 is a cheap IR reflow oven that has been around for many years (the earliest occurrence that I’ve found is from 2007). It has some serious and not so serious flaws that many blogs have already addressed. Known modifications include: Proper grounding, replacing the insulation tape, custom firmware and additional temperature sensors. Some people go even further and replace the system fan and controller board, add more powerful infrared heating elements or an additional fan for better heat distribution. I have included links to all of these modifications at the end of the article.

I bought the T-962 last November to have some support when soldering SMD components. But before I could use it for the first time, I had to take care of the most critical flaws.

Continue reading Puhui T-962 IR Reflow Oven Modifications

Pippin Atmark Wireless Controller Set

This is a new member of my Pippin collection: The Atmark Wireless Controller Set (BDE-82014 / PA-82014). It has the same functionality of the standard AppleJack controller, except that it is wireless. Three infrared LEDs send the signals to a receiver. The set is advertised as compatible with both Pippin Atmark and Macintosh computers. The latter require a P-ADB to ADB adapter and the AppleJack system extension (not included).

Atmark Wireless Controller Set (BDE-82014 / PA-82014)
Pippin Atmark Wireless Controller Set (BDE-82014 / PA-82014)
Continue reading Pippin Atmark Wireless Controller Set

Modifications for Philips CD-i Players

This is an attempt to collect all known and available modifications for Philips CD-i players in a single article. Consider it a work in progress – I will add new information from time to time. Please give feedback if you find an error or want to add something to this article.

Due to the plethora of different models, versions and revisions of CD-i players that have been sold under the Philips / Magnavox or entirely different brands (OEM), it is virtually impossible to create one big list that contains every player. I chose a different approach with several lists to cover most of the hardware combinations: Available modifications, mainboards, video encoders and NVRAM.

Continue reading Modifications for Philips CD-i Players

Philips CDI470 PAL/NTSC Modification

50/60 Hz modifications are quite simple hacks that have been figured out for almost all Philips CD-i player types with SCART connector. But what about all the CD-i players that do not have an RGB output, either because of reduced cost or because they have been sold outside of Europe? Technically, they can still be modified, but the foreign mode is pretty useless and results in a black and white picture or no picture at all.

The reason is easily explained: All Philips CD-i players have a main system clock at either 30,0000 MHz (PAL) or 30,2098 MHz (NTSC) and additional clock generators for some components. All newer players (Mono III and up) have a Brooktree video encoder and generate the colour subcarrier frequencies (PAL 4,4336 MHz and NTSC 3,5795 MHz) from the system clock. The older players with a Sony video encoder use one or two additional crystals and some more components for this task.

Continue reading Philips CDI470 PAL/NTSC Modification

Philips CD-i Timekeeper Clock Calibration

If your CD-i player’s clock is way off, then you can try to make use of the Timekeeper clock calibration tool of the low-level test. Be aware that it needs an accurate frequency counter and won’t help if your Timekeeper suffers from an empty battery.

Here are some NVRAM chips. All of them operate within the accuracy of ± 1,53 minutes per month at 25 °C.
8 KB – ST MK48T08B and M48T08 Timerkeeper.
8 KB – Dallas/Maxim DS1643 NV Timekeeping RAM.
32 KB – Dallas/Maxim DS1216C SmartWatch RAM (with Mitsubishi M5M5256DP SRAM).

Philips CD-i 8 and 32 KB NVRAM
Philips CD-i 8 and 32 KB NVRAM
Continue reading Philips CD-i Timekeeper Clock Calibration

Philips CDI470 32 KB NVRAM Upgrade

Some time ago, I noticed that the service manuals of most Mono II – IV boards have notes about 8 and 32 KB NVRAM types, to be set by jumpers and resistors. I never attempted to do that upgrade because most of my CD-i players feature 32 KB NVRAM or have older mainboards that cannot be upgraded. When I mentioned the possibility in this article, CD-i Fan warned me about the consequences: If device driver and descriptor in the ROM don’t support the extra RAM, then the player might not recognize it and lose the real-time clock – or it won’t work at all.

Why would you want to upgrade the NVRAM anyways?
For example, the save files of The 7th Guest, Lost Eden and Burn:Cycle already take up a lot of space. Add some more games and settings, and you will soon reach the critical limit of 97-98% where the player refuses to start.

CD-i memory full (8 KB)
CD-i memory full (8 KB)
Continue reading Philips CDI470 32 KB NVRAM Upgrade

Philips CDI470 Diagnosis and Repair

For upcoming experiments, I was in need of a working CD-i player with a Mono IV mainboard and 8 KB of NVRAM. I checked my basement and found a broken CDI470/20 that had been sitting there for years. Previous repair attempts had failed and I hadn’t bothered to look at it since.

Upon the first start, it greeted me with the memory full error:

CD-i memory full error
CD-i memory full error
Continue reading Philips CDI470 Diagnosis and Repair

NEC PC-FX Mouse (FX-MOU) Repair

When taking new screenshots for my old PC-FX articles, I noticed that my PC-FX mouse (FX-MOU) didn’t work properly anymore. It still detected the movement fine, but if failed to register one of the mouse buttons. My spare mouse turned out to suffer from this too.

It’s time for a quick repair. Two screws underneath the label hold the mouse together (marked with yellow circles).

NEC PC-FX Mouse (FX-MOU)
NEC PC-FX Mouse (FX-MOU)
Continue reading NEC PC-FX Mouse (FX-MOU) Repair

Serial Terminal on Psion Serie 5mx Pro

This is a follow-up to the Serial Terminal on Atari Portfolio article. The Portfolio with the Serial Interface add-on turned out to be too limited and bulky for being a mobile VT100 terminal, and I actually never used it. For years, I was looking for an even smaller alternative and have finally found it: The Psion Serie 5mx Pro. It is basically a Psion Series 5mx (or Ericsson MC218) for the German market. The operating system (EPOC32 Release 5) of this model is not stored in ROM, but instead it is loaded from the CF card into RAM on the first start. An English version of the operating system file (sys$rom.bin) can be found here.

Psion Serie 5mx Pro and Philips CDI470
Psion Serie 5mx Pro and Philips CDI470
Continue reading Serial Terminal on Psion Serie 5mx Pro

exploring retro game consoles and other technology

Scroll Up