[sebhc] H-89 bus pin out Help

Joe Smith bandit1921 at cox.net
Tue Mar 14 13:20:59 CST 2006


You are correct, I was looking at the bottom and not the top of the schematic..


At 10:47 AM 3/14/2006 -0800, you wrote:
>Hi Joe
>  There are two different busses. I think your looking
>at the memory expansion buss, not the I/O buss from
>the mother board. Please take another look at the schematic.
>Dwight
>
>
> >From: "Joe Smith" <bandit1921 at cox.net>
> >
> >Depends on what you are looking at, I took those from the CPU
> >Board,because looking at the H17 and Serial I/O used 2 different
> >names,pins are different.
> >At 10:24 AM 3/14/2006 -0800, you wrote:
> >>Hi
> >>  I don't think the pins you've labled are correct. As I recall
> >>only A0, A1, A2 and maybe A3 were on the I/O buss.
> >>The mother board decoded a number of blocks to the I/O
> >>boards on some of the other pins. I don't think the
> >>entire address were there through A12. Pin11 is the
> >>select line for the floppy block of I/O.
> >>  Also, I think pin 6 is BRD_L and 7 is BWR_L not address
> >>lines. Pin 13 is the clock line ( 2.048MHZ ).
> >>Dwight
> >>
> >> >From: "Joe Smith" <bandit1921 at cox.net>
> >> >
> >> >Here is a little text file from what I see on my Schematic, if you
> >> >look at the H17 Floppy connectors and the serial I/O connectors it
> >> >says different things,this is a combo of those and what it shows for
> >> >them on the CPU board.
> >> >At 04:53 PM 3/14/2006 +0000, you wrote:
> >> >>Bill Malcolm wrote:
> >> >>>Hi: All I did not see the H-89 BUS Pin out in the archive files  (
> >> >>>for the slot card).
> >> >>
> >> >>The schematic for the floppy controller only identifies the pins
> >> >>that it uses, but it might be enough.
> >> >>
> >> >>http://www.sebhc.org/archive/documents/hardware/HZ89/H-88/H88-1-sc
> >> hematic.pdf
> >> >>
> >> >>It doesn't look like we have the schematic pull-outs for the H88/89
> >> >>manuals in there yet.  I'll keep an eye out for some during my cleanup.
> >> >>
> >> >>-- Steven
> >> >>
> >> >>
> >> >>--
> >> >>Delivered by the SEBHC Mailing List
> >> >
> >> >Joe Smith
> >> >joebandit
> >> >jtsdadinaz
> >> >Conbuilder debugger /Programmer
> >>
> >>
> >>--
> >>Delivered by the SEBHC Mailing List
> >
> >Joe Smith
> >joebandit
> >jtsdadinaz
> >Conbuilder debugger /Programmer
> >
> >--
> >Delivered by the SEBHC Mailing List
>
>
>--
>Delivered by the SEBHC Mailing List

Joe Smith
joebandit
jtsdadinaz
Conbuilder debugger /Programmer
-------------- next part --------------
top 10 pin is: 1 and 10 are gnd, 2-9 are d0h thru d7h
big connector: 1 = +5v source
							 2 = gnd
							 3 = A0
							 4 = a1
							 5 = a2
							 6 = brd l
							 7 = bwr l
							 8 = wait l
							 9 = i/o serl 0l
							 10 = i/o serl 1l
							 11 = i/o flpy on 506 i/o lp on 504 & 505
							 12 = i/o cass on 504 & 505 ffmweh l on 506
							 13 = 2.048mhz clk
							 14 = 1.8432 mhz clk
							 15 = reset l
							 16 = i/o 0h
							 17 = i/o 1h
							 18 = int 5 l
							 19 = int 4 l
							 20 = int 3 l
							 21 = +12v
							 22 = -12v
							 23 = +5v
							 24 = +12v
							 25 = gnd  	


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