Sanyo MBC-200

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Re: Sanyo MBC-200

Postby micko on Mon Nov 07, 2011 10:12 pm

For CRT cpu:

0x70, 0x73 i8255 1
0xb0, 0xb1 mc6845
0xd0, 0xd3 i8255 2

For IPL cpu:
0xe0, 0xe1 i8251 1
0xe4, 0xe7 fdc
0xe8, 0xeb i8255 (not sure 1 or 2)
0xec, 0xed i8251 2

Now need to figure how they talk :)
micko
 
Posts: 7
Joined: Fri Oct 28, 2011 1:03 am

Re: Sanyo MBC-200

Postby micko on Sat Nov 12, 2011 1:56 am

A team member made communication work between cpu's and here is screen :

Image

So ROM's are fine. When I put disk image it start booting but I get "MEMORY ERROR" since
memory banking is not properly implemented and it is expected that full 64KB area is RAM.
micko
 
Posts: 7
Joined: Fri Oct 28, 2011 1:03 am

Re: Sanyo MBC-200

Postby matsondawson on Sat Nov 12, 2011 7:04 am

Ha! That's totally awesome, well done.
matsondawson
 
Posts: 323
Joined: Mon May 11, 2009 4:34 pm

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