Re: Blank CMS SCSI Card PCBs

[david@uow.edu.au (David Wilson)]

mjmahon@aol.com (Michael J. Mahon) writes:
>Such a conversion is by its nature quite ambiguous--revolving around
>the issue of what canonical "simplified" form is desired.

>In this case, you will want to factor the truth table to match the structure
>of some programmable logic chip that you want to use to duplicate the
>function.  Unless the program you have is easily "steerable" in the kind
>of factorings it prefers, it may be easier to start with another program.

I think SOP (Sun of Products) seems fairly standard. eg:

F(A,B,C,D,E)=A./B.C + /B./C.E + /B.C./E + /B.D.E + C.D./E

The program I have is called BOOZER and was written in 1977. I have it
printed in the back of William I. Fletcher's "An Engineering Approach to
Digital Design" (1980). It is 18 pages of Algol 60.

My only worry is a circuit like:

O1 = F(I1..IN)
O2 = F(IJ..IK,O1)

My scanning program will have to recognise that O1 is an input to O2
and scan O2 with O1 both asserted and de-asserted.
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia