Компьютер "Robotron 1715(M)"

[micko]

I have start working on that one, but problem is in floppy controler, since it is implemented using 2 x Z80 PIO and some "not dumped" PROMs.
Thing is that 8275 is used, but no DMA chip is used.
And looks like floppy code is first executed since 8275 is not initialised on begining.
Need to disassemble full code for it to see how it is all working. Will send my findings.

Добавлено через 5 часов 58 минут
Here are some IP map addresses:

PIOCS0 000000 00
PIOCS1 000100 04
CTCCS0 001000 08
SIOCS0 001100 0c
CTCCS0 010000 10
SIOCS1 010100 14
CRTCS 011000 18
NotConn 011100 1c

KRFD 100000 20
MEMCS0 100100 24
MEMCS1 101000 28
LT107CS 101100 2c
??? 110000 30
BWSCS 110100 34
NotConn 111000 38
ZRES 111100 3c


Floppy
======
PIOCS0
PIOCS1
KRFD

Video
======
CRTCS
BWSCS
ZRES

V24
====
CTCCS1
LT107CS
SIOCS1

IFSS
====
SIOCS0
CTCSC0