Monthly Archives: January 2020

PUM 9.55 – Fixes

Posted on January 11, 2020 by schrievkrom

A similar situation as in 9.53 has been fixed – located when creating store classes When creating the initial REST structure, the “total” count attribute did not get a correct role defined

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PUM 9.51 – renaming of the CodeGenerator classes

Posted on January 10, 2020 by schrievkrom

PUM contains two different application models: Distributed IN-RAM database for C#. This one is used in our company for a main application we are using since 2005. It is not suitable for any other person outside of our company, but … Continue reading →

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PUM 9.53 – adapted to run under VASmalltalk 9.2

Posted on January 10, 2020 by schrievkrom

VA 9.2 is out for quite some time, but had no real time to test it out. But yesterday I load all the code of PUM into VA 9.2 and made a first build. The update was very easy. I … Continue reading →

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Documentation available for older chips (e.g. Z80, Z180, 68k)

Posted on January 7, 2020 by schrievkrom

Lots of documentation about Z80/Z180, 68K system are available under /https://feldtmann.ddns.net/rc2014/doc/

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RC2014 Bus – SoundCard AY-3-8910 – Revision 1

Posted on January 5, 2020 by schrievkrom

Here is a soundcard for the RC2014 bus. Its the same stuff as for the MSKZIO bus as I published it here, only the bus connector has been changed. Actually I have not build it … Both cards are derived … Continue reading →

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MSKZIO-Bus — USB under development

Posted on January 4, 2020 by schrievkrom

This is my current work – over Christmas and holidays. A controller board with 4 USB controller chips. Here I would like to solve several problems (for additional computer system projects – e.g. 68k system): Get access to USB devices … Continue reading →

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MSKZIO-Bus — Z80KIO Controller

Posted on January 4, 2020 by schrievkrom

You never can get enough interfaces for such a small computer. One of the older, most powerful devices for the Z80/Z180 is the Z80 KIO. It offers two parallel ports, 2 serial ports and 4 timers:

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MSKZIO-Bus — I2C Controller PCA9665

Posted on January 4, 2020 by schrievkrom

Another working project for my MSKZIO-bus is an I2C controller board based on PCA9665. Lots of devices – sensors, memories can be accessed via the I2C protocol. The small board above the controller card is a 4 digit LED number … Continue reading →

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MSKZIO-Bus Extender Backplane

Posted on January 4, 2020 by schrievkrom

To get additional four slots you may add (to my RC2014 dapter backplane) my extender backplane:

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Development System – SC126 from Steve Cousins

Posted on January 4, 2020 by schrievkrom

Here a picture of my development system – a SC126 system from Steve Cousins for the RC2014 bus system. The system has been published at https://easyeda.com/sccousins/sc126-v1-0-z180-processor-for-z50bus. The base system (a Z180 with 512 KByte RAM and 512 KByte ROM at … Continue reading →

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