Thank you guys!This is an awesome job from you, now the scene is more clear and crisp and our repairs will be more easy...
Are there also schematics of internal FDDs?
Far more easier : with the help of those schematics, it only took a single hour to me to find the problem and fix a black screened CZ-600CE.
Unfortunatly, no FDD schematics or infos. You are looking for extra pinouts on PRO's ones, right ? I promise you we'll spend some times on this (btw, I've restarted our "project"
Anyway, here is a quick tour about all schematics coming from Outside X68000.
Feel free to ask for any infos about them. CZ-6BE1
Internal 1MB RAM addon for original X68000 (CZ-600CE).CZ-6BE1A
Internal 1MB RAM addon for ACE series.CZ-6BE1A (A)
Internal 1MB RAM addon for ACE and PRO series.CZ-6BE2A
Internal 2MB RAM addon for XVI (twin-tower). There is also 2 extra ROM sockets to change the bios.CZ-6BE2D
Internal 2MB RAM addon for XVI Compact. Also provide a socket to put an FPU (MC68881).CZ-6BE2B
Extra 2MB RAM addon to mount back on CZ-6BE2A or CZ-6BE2D.CZ-6BE2 & CZ-6BE2C
External 2MB RAM addon. I don't get the exact difference yet, but it's probably related to the stock amount of RAM you have.CZ-6BE4 & CZ-6BE4C
External 4MB RAM addon.CZ-6BP1 & CZ-6BP1A
The official FPU accelerator board featuring an MC68881. I don't see any differences between those 2 versions. So, it's probably just a PCB fix.
I found this one really easy to build and will probably try to design a DIY clone one day.CZ-6BM1
This is the well known MIDI addon board ! Equipped with the Yamaha MCS (YM3802).CZ-6BN1
This one is an external addon board which provides 2 unidirectionnal 8bits buffered lines, plus some control lines presentable on a DB37 connector. Does use the very common 82c55. Designed mostly for various small and low speed hardware addons (eg: hand scanner).
I've always said this kind of board is a very good start point for those who want to give a try into hardware programming.CZ-6BV1
Multi-output TV converter and color booster. The idea is to transform the video output signals from the x68k to a 15Khz NTSC capable only TV presentable on traditionnals composite and S-Video connectors.CZ-6BS1
The well known official external SCSI-1 addon board equipped with a MB89352 scsi controller.CZ-6BG1
You have probably never heard about this one, and not even interested into getting one. It will allow the X68000 to communicate on a GPIB (General Purpose Interface Bus). An old but always used standard mostly used by industry to drive various equipment in a network fashion.
Try googling for GPIB and IEEE 488 if you want more details.CZ-6BF1
RS-232C addon board ! It will add 2 extra serial port to your X68000. Feature the exact same z85c30 as the one you can found inside your x68000 and does work exactly in the same way.CZ-6BC1
A FAX ! You are probably unable to use it nowadays, but it's interesting to know that a FAX emitter/receiver has existed for the x68000.CZ-6BU1
I don't exactly know if this card has been designed for a specific purpose. Seems to me it's nothing more than a simple general purpose I/O board for interested programmers, just like the CZ-6BN1 but without dedicated device (82c55). Designed only with simples and cheap logics, buffers, latches and flip-flop IC.
Does presents a 50 pins IDC connector on the back orgranized as :
- 2x8bits buffered input lines
- 2x8bits buffered and latchable output lines
- Some control lines for the 4 ports
IMO, also a good card to begin with hardware programming.
Hum... I don't remember how many times I have done this, but one more will not hurt : thanks you BlueBMW for providing me those dangerous stuffs !