11 Jun
2019
11 Jun
'19
10:44 a.m.
On Tue, 6/11/19, dwight via cctalk <cctalk at classiccmp.org> wrote:
When I needed to create a PAL from a schematic, I
first made
a schematic of what the PAL was suppose to do, using the
same basic model of logic that the PAL provided. Once I was
done, I took the PAL map from the TI book and made red dots
on each of the connections I needed. I'd then go back
I thought I was the only one! Back when I first used a PAL, I
also photocopied the page from the databook, marked up
the connections I wanted, and then asked my coworkers
how to get that programmed into the device. It was pretty
annoying to learn I had to convert it to equations first. It
seemed like a pointless extra step when the software was
just going to turn around and turn the equations back into
the matrix wiring I had just marked up.
BLS
11 Jun
11 Jun
1:46 p.m.
I couldn't see remoting my self more from the design. The JEDIC file is specified, the
fuses are numbered why do we need the added steps.
I was told the same thing, that there was no way other than to use a PAL compiler.
If you really want to confuse things, try using a PALASM or such to move from positive
logic to negative logic.
Another use for the tristate is to make an OC output.
Dwight
________________________________
From: Brian L. Stuart <blstuart at bellsouth.net>
Sent: Tuesday, June 11, 2019 10:44 AM
To: Paul Berger; General Discussion: On-Topic and Off-Topic Posts; dwight
Subject: Re: HP9816 PAL16L8
On Tue, 6/11/19, dwight via cctalk <cctalk at classiccmp.org> wrote:
When I needed to create a PAL from a schematic, I
first made
a schematic of what the PAL was suppose to do, using the
same basic model of logic that the PAL provided. Once I was
done, I took the PAL map from the TI book and made red dots
on each of the connections I needed. I'd then go back
I thought I was the only one! Back when I first used a PAL, I
also photocopied the page from the databook, marked up
the connections I wanted, and then asked my coworkers
how to get that programmed into the device. It was pretty
annoying to learn I had to convert it to equations first. It
seemed like a pointless extra step when the software was
just going to turn around and turn the equations back into
the matrix wiring I had just marked up.
BLS
2022
days inactive
2022
days old
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