I think it must be possible to build an interface between PC and pocket computer.
The PC-1500 cpu has two pins PU, PV who can set and reset with one machine language opcode. This can used for sending data to the PC.
The PC-1500 has an input/output port with 8 Pins. This can used for receiving data from PC.

The only usable interrupt can triggered with the "on" key of the PC-1500 Keyboard.
The interrupt routine can stored in one system table. (First Byte is 85).

Has anyone experience for this case? (you can call it "Elektrische Eisenbahn )

Hello,

Try to ask on silicium.org/forum (there are a lot of pocket computer users here).

Regards

Thanks for your post.
I spent a lot of time for this issue.
Here the result:
[wiesweg.org]
Greetings, Bernhard

Hello,

Wow, impressive !
Do you have a scheme of this issue ?
I am sure that some people may by interested in building their own interface

Regards

The scheme for this is very simple:
only 3 lines are necessary:

[wiesweg.org]

The other pictures show the internal RAM with chip select:
8000-9FFF: not used, former test RAM.
0000-7fff: RAM
not signed: 0000-7fff: RAM in the second area.

The external ROM module holds the code for 8K machine language:
The routines for serial input and output and other new BASIC instructions.
The RVS HexMonitor is on board.
8000-9FFF: ROM

I made some new Pictures:
[wiesweg.org]

Greetings, Bernhard

Hello,

Is your Windows "Sharp PC1500" software available to download ?

I will post a link to your picture on the French Silicium forum.
Very nice work !

Regards

Here the link to the source code:

[wiesweg.org]
ROM (8000-9FFF) is attached.

The terminal program is working only with installed ROM.

Greetings, Bernhard



Edited 1 time(s). Last edit at 01/18/2014 09:23PM by pocket.

Hello,

Thank you for your work.

I have posted a message in the silicium forum (where mosts of the french PC-1500 fans are) :
[silicium.org]

Best regards



Edited 1 time(s). Last edit at 01/18/2014 09:33PM by pocket.