Re: 9010A RAM test patterns scripts

I'd much prefer to see the AT keyboard translation approach used. Can
anyone out there program a PIC 16F84 & make a simple board?

I've got about 2 dozen board repairs stacked up at the moment so I haven't
had a chance to pull my unit out of service.

I promise I'll provide a copy of my ROM as soon as I have some "breathing
room". (Besides if I can get other 9100 users on line I'm all for that!)

Kev

> When are you going to read your Keyboard ROM so I have a chance of using
> the 9100? A few of us need that...
>
> John :-#)#
>
> At 04:26 PM 31/07/2002 -0400, Kev wrote:
>
> >Fixing pinballs?
> >
> >Use your 9100, a mask is part of the RAM test. :-)
> >
> >Hardware adapter that would duplicate D4-D7 on D0-D3
> >
> >On your program would this work?
> >(sorry I dont keep up with the Rice compiler)
> >
> >REG2=1
> >1 LABEL 1
> >REGA=(RAM location)+REG2
> >WRITE @ REGA=$AA
> >READ @ REGA REG1
> >REG1 = REG1 AND $F0
> >IF REG1<>$A0 THEN GOTO (error handler)
> >REG2=REG2+1
> >IF REG2<256 GOTO 1
> >REG2=1
> >
> >2 LABEL 2
> >REGA=(RAM location)+REG2
> >WRITE @ REGA=$55
> >READ @ REGA REG1
> >REG1 = REG1 AND $F0
> >IF REG1<>$50 THEN GOTO (error handler)
> >REG2=REG2+1
> >IF REG2<256 GOTO 1
> >
> >Do you have a 6821 script up & running?
> >
> >Thanks,
> >Kev
> >
> >
> >----- Original Message -----
> >From: "John Robertson" <jrr@flippers.com>
> >To: <TechToolsList@flippers.com>
> >Sent: Wednesday, July 31, 2002 2:31 PM
> >Subject: 9010A RAM test patterns scripts
> >
> >
> > > Anyone make a script for testing 5101 CMOS RAMs?
> > >
> > > I envision something like this
> > >
> > > 6800.pod
> > >
> > > REGA (SET TO BEGINNING 5101 ADDRESS)
> > >
> > > TEST
> > > LOOP1
> > > WRITE REGA = AF 'note that as 5101's only have 4 DATA lines you only
set
> > > the half in use and the other to F in this case D4, 5, 6 & D7 are
tested.
> > > READ REGA =AF
> > > WRITE REGA = 5F
> > > READ REGA = 5F
> > > IF REGA=256 GOTO TEST2
> > > INCR REGA
> > > GOTO LOOP1
> > >
> > > TEST2
> > > REGA = BEGINNING 5101
> > > REGB = 0001
> > > LOOP2
> > > WRITE REGA =REGB
> > > READ REGA = REGB
> > > INCR REGB
> > > IF REGA = 256 GOTO END
> > > GOTO LOOP2
> > >
> > > END
> > >
> > > Gah, this is very rough, and I need time to review it (haven't fired
it
> > > up), but any suggestions for a better RAM test would be appreciated.
> > > Testing the 4 bit RAM is not very nice.
> > >
> > > I'm looking for something that would give similar results to the Short
RAM
> > > test and possibly the Long RAM test...
> > >
> > > John :-#)#
> > >
>
Received on Wed Jul 31 14:01:39 2002