information on ancient matsushita/panasonic ICs

[Jim Battle]

A friend is stymied in getting his emulator for the Panasonic JR-200 
computer complete.  The machine uses some parts that are long 
discontinued.  I'm hoping someone here might have an old databook that 
contains more information that can currently be found on the web.

The MN1800A was apparently equivalent to the 6802.  He has that working 
and so no mystery there.  I just bring it up since the other parts were 
perhaps related.

MN1544 -- here is the most information I can find after an couple hours 
of googling:

4-Bit Microcontroller-Microcomputer 	

On-Chip RAM (Bytes)=1k
On-Chip ROM (bytes)=4k
Number of Interrupt Lines=2
Number of Maskable Interrupts=2
No. of I/O Ports=6
Vsup Nom.(V) Supply Voltage=5.0
Package=DIP
Pins=N/A
Military=N
Technology=NMOS

MN1271 -- Likewise,

MN1271
	
Peripheral Interface Adapter (PIA) - Universal Interface Adapter 	

Word Size=16
Data Transfer Type (S/P)=Multimode
Vsup Nom.(V) Supply Voltage=5.0
Package=DIP
Pins=64
Military=N
Technology=CMOS

If anybody has any more information than this, my friend would 
appreciate it.

BTW, his emulators, including the JR-200, are here:

	http://www.geocities.com/emucompboy/

Thanks