Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!uccba!ucqais!ggibeau
From: ggibeau@ucqais.uc.edu (AMOEBOID)
Newsgroups: comp.sys.amiga
Subject: Re: 1.4 kickstart in an A1000 (was Re: Things.)
Summary: I guess the mail does not get through
	 PAL Equations for A-1000
Message-ID: <2325@ucqais.uc.edu>
Date: 6 Mar 90 05:49:47 GMT
References: <48773875.19c13@locust.engin.umich.edu> <7533@sun.acs.udel.edu> <641@sagpd1.UUCP>
Distribution: na
Organization: U.C. Dept. of Biology
Lines: 118

In article <641@sagpd1.UUCP>, monty@sagpd1.UUCP (Monty Saine) writes:
> In article <695@shodha.dec.com> ridder@elvira.enet.dec.com (Hans Ridder) writes:
> >If I had the ROM adapter board that George Gibeau and friends
> 
> 	So far it looks like we will see the ROM adapter board right after
> 	the video toaster is released. After about 10 exchanges of e-mail
> 	messages with that group along the line of:
> 
> 	Me :Send me the pal equations:
> 	Them: If you want the equations just ask
> 	Me :Send me the pal equations:
> 	Them ; If you want the equations just ask
> 	Me :Send me the pal equations:
> 	Them ; If you want the equations just ask
> 	Me :Send me the pal equations:
> 	Them ; If you want the equations just ask
> 	Me: I give up!
> 
> 
> 	Monty Saine


Well, I guess the mail never makes it through.  I have sent these
equations about 3 times now.

Here are the CORRECT (the ones in the A-1000 manual are WRONG)
PAL equations for the Amiga 1000.  It took a while to debug the
incorrect equations (thanks Dwight), so enjoy.

The following is the PALCAS equation

PAL16L8
PALCAS C= 252128-02 REV3
5:21 PM November 9, 1989
MODIFIED BY DWIGHT BLUBAUGH

/ARW A20 A19  /PRW /UDS /LDS /ROME /RE /RGAE GND /DAE /ROM01
/C1 /RRW LCEN UCEN /CDR /CDW /NC1 VCC

ROM01	= ROME*A20*A19*/PRW 	; $F80000-FFFFFF(ROM SELECT)
				; AND $180000-1FFFFF
	+ ROME*/A20*/A19*/PRW	; $E00000-E7FFFF (ROM SELECT)
				; AND $000000-07FFFF
CDR	= RE*/PWR*/C1		; ENABLE RAM READ
	+ RGAE*/PRW*/C1
	+ CDR*LDS
	+ CDR*UDS
CDW	= RE*PRW		; ENABLE RAM WRITE
	+ RGAE*PWR
	+ CDW*/C1
/UCEN	= /DAE*/RE*/UCEN	; GENERATE CAS
	+ /DAE*/RE*C1
	+ /DAE*UDS*C1
	+ /DAE*/UDS*/UCEN
/LCEN	= /DAE*/RE*/LCEN	; GENERATE CAS
	+ /DAE*/RE*C1
	+ /DAE*/LDS*C1
	+ /DAE*/LDS*/LCEN
RRW	= RE*PRW		; /WE FOR DRAMS CPU
	+ DAE*ARW*C1		; OR AGNUS ACCESS
	+ RRW*DAE



The following is the PALEN equation;

PAL16L8
PALEN C= 252128-01 REV2
5:21 PM November 9, 1989
MODIFIED BY DWIGHT BLUBAUGH

A23 A22 A21 /AS /DBR OVL /OVR XRDY /C3 GND /C1 /VPA
/ROME /DAE /RGAE /RE /DTACK /BLS /MYRAME VCC

IF(/OVR) VPA	= AS*A23*/A22*A21
ROME	= AS*A23*A22*A21*/OVR			; $E00000-FFFFFF KICKSTART ROM
	+ AS*/A23*/A22*/A21*/OVR*OVL		; $000000-1FFFFF BOOT ROM
MYRAME	= AS*/DTACK*A23*A22*A21*/OVR*C1*/C3	; $E00000-FFFFFF
	+ AS*/DTACK*/A23*/A22*/A21*/OVR*OVL*C1*/C3 ; $000000-1FFFFF 
						   ; IF OVL=L, OVR=H
	+ MYRAME*C1
	+ MYRAME*C3
RE	= /DBR*AS*/DTACK*/A23*/A22*/A21*/OVL*/OVR*C1*/C3 ; $000000-1FFFFF 
							 ; IF OVL=L, OVR=H
	+ RE*C1
	+ RE*C3
IF(/OVR) DTACK =
	  AS*/A23*/A22*A21*XRDY			; $200000-3FFFFF EXP RAM
	+ AS*/A23*A22*XRDY			; $400000-7FFFFF EXP RAM
	+ AS*A23*/A22*/A21*XRDY			; $800000-9FFFFF EXP RAM
	+ MYRAME*XRDY*C3			; $000000-1FFFFF OVL=H
						; AND $E00000-FFFFFF
	+ RE*C3					; $000000-1FFFFF OVL=L
	+ RGAE*C3				; $C00000-DFFFFF
	+ DTACK*AS*XRDY
RGAE	= /DBR*AS*/DTACK*A23*A22*/A21*C1*/C3*/OVR ; $C00000-DFFFFF
	+ RGAE*C1
	+ RGAE*C3
DAE	= DBR*C1*/C3				; CHIP RAM ADDRESS ENABLE
	+ DAE*C1
	+ DAE*C3
BLS	= AS*/DTACK*/A23*/A22*/A21*/OVL*C1*/C3*/OVR ; $000000-1FFFFF OVL=L
	+ AS*/DTACK*A23*A22*/A21*C1*/C3*/OVR	; $C00000-DFFFFF
	+ BLS*C1
	+ BLS*C3



Maybe this will make your life a little easier :-)

Regards,
    George

-- 
UUCP:  ucqais.uc.edu!ggibeau  BBS: (513) 721-7977  GT NODE: 006/005
US Snail-Dept of Biology ML 06, University of Cincinnati, Ohio 45221
---I mean what I say, and I say what I mean------
                                       -----BUT, not at the same time!