[Coco] Gal Logic

[peak at mail.polarcomm.com]

Thanks James!
Now can we fit the clock gen into the same GAL with the 
address decoder?
Maybe a 22V10 ??
---- Original message ----
>Date: Thu, 29 Jan 2004 18:31:12 -0500
>From: jdaggett at gate.net  
>Subject: Re: [Coco] Gal Logic  
>To: CoCoList for Color Computer Enthusiasts 
<coco at maltedmedia.com>
>
>Eric
>
>Hope this helps
>
>james
>
>CHIP FlipFlop PAL16RP8
>  
>CLK J K T PR CLR D S R GND
>/OC /SRC /SRT /DC /DT /TC /TT /JKC /JKT VCC
>  
>EQUATIONS
>  
>JKT :=  J*/JKT*/CLR                     ;JK Flio-Flop
>     + /K* JKT*/CLR                     ;(JKC = /Q)
>     +  PR                              ;Preset Q
>  
>JKC := /J* K  */PR                      ;JK Flip-Flop
>     + /J*/JKT*/PR                      ;(JK = /Q)
>     +  K* JKT*/PR
>     +  CLR                             ;Clear /Q
>  
>TT  :=  T*/TT*/CLR                      ;T Flip-Flop
>     + /T* TT*/CLR                      ;(TT = Q)
>     +  PR                              ;Preset Q
>  
>TC  := /T*/TT*/CLR                      ;T Flip-Flop
>     +  T* TT*/PR                       ;(TC = /Q)
>     +  CLR                             ;Clear /Q
>  
>DT  :=  D*/CLR                          ;D Flip-Flop
>     +  PR                              ;Preset Q
>  
>DC  := /D*/PR                           ;D Flip-Flop
>     +  CLR                             ;Clear /Q
>  
>SRT :=  S*     /CLR                     ;Set-Reset Flip-Flop
>     + /R* SRT*/CLR                     ;(SRT = Q)
>     +  PR                              ;Preset Q
>  
>SRC := /S* R  */PR                      ;Set-Reset Flip-Flop
>     + /S*/SRT*/PR                      ;(SRC = /Q)
>     +  CLR                             ;Clear /Q
>
>
>
>On 29 Jan 2004 at 11:55, peak at mail.polarcomm.com wrote:
>
>Date sent:      	Thu, 29 Jan 2004 11:55:39 -0600
>From:           	peak at mail.polarcomm.com
>To:             	coco at maltedmedia.com
>Subject:        	[Coco] Gal Logic
>Send reply to:  	CoCoList for Color Computer 
Enthusiasts 
><coco at maltedmedia.com>
>	<mailto:coco-
>request at maltedmedia.com?subject=unsubscribe>
>	<mailto:coco-
>request at maltedmedia.com?subject=subscribe>
>
>> Does anyone know how to program a coco type clock 
generator 
>> into a GAL chip? I understand combinational logic fairly 
>> well, and am able to use "boolean" logic equations. My 
>> understanding of "clocked" OR "Registered" logic is a bit 
>> rusty.
>> What I want do do is build a dual J-K flip flop E and Q 
clock 
>> generator in a GAL device not in TTL!
>> Also is there a library somewhere of equations for 
flipflops 
>> etc?
>> Eric
>> KB0LXY
>> 
>> -- 
>> Coco mailing list
>> Coco at maltedmedia.com
>> http://five.pairlist.net/mailman/listinfo/coco
>
>
>
>-- 
>Coco mailing list
>Coco at maltedmedia.com
>http://five.pairlist.net/mailman/listinfo/coco