Fluke & Midway 8080 boards...
Anyone remember what is needed to get valid memory reads on the 8080 boards? I seem to recall one has to set the gates to a state prior to doing a ROM test, but can't recall the process...perhaps someone has a script they can share? At the moment the RAM test works fine, however any ROM space that has FF in it - on the high memory area (FFXh) gets random garbage inserted from the injection of some clock info on the data buss. The valid data locations in the ROM dont' appear to be affected. Tried adding a pullup resistor bank, no change. No ROMs, no change... Thanks! John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
John, there is no trick to Fluking 8080 Pcbs, they work as normal, no fudging necessary. I use a 9100 however, ymmv. Are you perhaps using a device that isn't strapped properly on the myriad of jumpers? I think I may have seen what you describe happen before, and it was due to something like having a 2716 EPROM in, but the Pcb was strapped for 9316 roms.. Andrew Welburn (mobile) www.andys-arcade.com
On 26 Jun 2014, at 21:42, John Robertson <jrr@flippers.com> wrote:
Anyone remember what is needed to get valid memory reads on the 8080 boards? I seem to recall one has to set the gates to a state prior to doing a ROM test, but can't recall the process...perhaps someone has a script they can share?
At the moment the RAM test works fine, however any ROM space that has FF in it - on the high memory area (FFXh) gets random garbage inserted from the injection of some clock info on the data buss. The valid data locations in the ROM dont' appear to be affected. Tried adding a pullup resistor bank, no change. No ROMs, no change...
Thanks!
John :-#)#
-- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Hi Andrew, Well, I'm not sure where the problem is at the moment, I don't recall this happening in the past so indeed it could be my 8080 pod that is part of the problem... I did find one cute trick - I have the Kurz Kash fixture and cards for Sea Wolf and while it does allow you to test all the functions the LED lights are difficult to get to light up to make sure that all the driver transistors work. So I put the 8080 pod into Learn mode for 10000h - 1000FFh which is the I/O port for the 8080 and the lights all turn on - at least the lights for the transistors that work...Cute. Otherwise you have to load the the I/O data with 0F or F0 at the correct !/O port address which I haven't gotten around to figuring out yet. Still can't get the high end FFs at addresses FF0h to FFFh to be stable though... Any chance of sharing your Midway 9100 script with the group? John :-#)# On 06/27/2014 3:56 AM, Andrew Welburn wrote:
John, there is no trick to Fluking 8080 Pcbs, they work as normal, no fudging necessary. I use a 9100 however, ymmv.
Are you perhaps using a device that isn't strapped properly on the myriad of jumpers? I think I may have seen what you describe happen before, and it was due to something like having a 2716 EPROM in, but the Pcb was strapped for 9316 roms..
Andrew Welburn (mobile) www.andys-arcade.com
On 26 Jun 2014, at 21:42, John Robertson <jrr@flippers.com> wrote:
Anyone remember what is needed to get valid memory reads on the 8080 boards? I seem to recall one has to set the gates to a state prior to doing a ROM test, but can't recall the process...perhaps someone has a script they can share?
At the moment the RAM test works fine, however any ROM space that has FF in it - on the high memory area (FFXh) gets random garbage inserted from the injection of some clock info on the data buss. The valid data locations in the ROM dont' appear to be affected. Tried adding a pullup resistor bank, no change. No ROMs, no change...
Thanks!
John :-#)#
-- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out" _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Is there On Jun 27, 2014 1:59 PM, "John Robertson" <jrr@flippers.com> wrote:
Hi Andrew,
Well, I'm not sure where the problem is at the moment, I don't recall
this happening in the past so indeed it could be my 8080 pod that is part of the problem...
I did find one cute trick - I have the Kurz Kash fixture and cards for
Sea Wolf and while it does allow you to test all the functions the LED lights are difficult to get to light up to make sure that all the driver transistors work. So I put the 8080 pod into Learn mode for 10000h - 1000FFh which is the I/O port for the 8080 and the lights all turn on - at least the lights for the transistors that work...Cute. Otherwise you have to load the the I/O data with 0F or F0 at the correct !/O port address which I haven't gotten around to figuring out yet.
Still can't get the high end FFs at addresses FF0h to FFFh to be stable
though... Is there ROM at high addresses? On an 8080 the ROM should be from 0000.
On 06/27/2014 2:31 PM, Rodger Boots wrote:
Is there On Jun 27, 2014 1:59 PM, "John Robertson" <jrr@flippers.com <mailto:jrr@flippers.com>> wrote:
Hi Andrew,
Well, I'm not sure where the problem is at the moment, I don't
recall this happening in the past so indeed it could be my 8080 pod that is part of the problem...
I did find one cute trick - I have the Kurz Kash fixture and cards
for Sea Wolf and while it does allow you to test all the functions the LED lights are difficult to get to light up to make sure that all the driver transistors work. So I put the 8080 pod into Learn mode for 10000h - 1000FFh which is the I/O port for the 8080 and the lights all turn on - at least the lights for the transistors that work...Cute. Otherwise you have to load the the I/O data with 0F or F0 at the correct !/O port address which I haven't gotten around to figuring out yet.
Still can't get the high end FFs at addresses FF0h to FFFh to be
stable though...
Is there ROM at high addresses? On an 8080 the ROM should be from 0000.
By high address I meant 0FFFh, not FFFFh. It was the high end of the ROM space which is 0 - 0FFFh in Sea Wolf. The RAM test (2000h - 3FFFh) works just fine. Annoying. John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I have a space invaders deluxe I will be trying tonight. Will let you know what I find. David :-)= -----Original Message----- From: "John Robertson" <jrr@flippers.com> Sent: 6/27/2014 3:18 PM To: "techtoolslist@flippers.com" <techtoolslist@flippers.com> Subject: Re: [Techtoolslist] Fluke & Midway 8080 boards... On 06/27/2014 2:31 PM, Rodger Boots wrote:
Is there On Jun 27, 2014 1:59 PM, "John Robertson" <jrr@flippers.com <mailto:jrr@flippers.com>> wrote:
Hi Andrew,
Well, I'm not sure where the problem is at the moment, I don't
recall this happening in the past so indeed it could be my 8080 pod that is part of the problem...
I did find one cute trick - I have the Kurz Kash fixture and cards
for Sea Wolf and while it does allow you to test all the functions the LED lights are difficult to get to light up to make sure that all the driver transistors work. So I put the 8080 pod into Learn mode for 10000h - 1000FFh which is the I/O port for the 8080 and the lights all turn on - at least the lights for the transistors that work...Cute. Otherwise you have to load the the I/O data with 0F or F0 at the correct !/O port address which I haven't gotten around to figuring out yet.
Still can't get the high end FFs at addresses FF0h to FFFh to be
stable though...
Is there ROM at high addresses? On an 8080 the ROM should be from 0000.
By high address I meant 0FFFh, not FFFFh. It was the high end of the ROM space which is 0 - 0FFFh in Sea Wolf. The RAM test (2000h - 3FFFh) works just fine. Annoying. John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Turns out the 8080 pod has some problem that doesn't show up in the self test. So, the word is - don't trust the self test if you get odd results! Try a second pod (if you can). For anyone working on a Sea Wolf you can test the lamp drivers using address 10009h for the hit lights and 1000Ah for the Torpedo lights. With the KK kit using the LEDs you can turn either all of them on/off with FF/00 or you can turn them on individually with poking around in the code. 55/AA alternates the outputs for example... John :-#)# On 06/27/2014 4:40 PM, David Shoemaker wrote:
I have a space invaders deluxe I will be trying tonight. Will let you know what I find.
David :-)= ------------------------------------------------------------------------ From: John Robertson <mailto:jrr@flippers.com> Sent: 6/27/2014 3:18 PM To: techtoolslist@flippers.com <mailto:techtoolslist@flippers.com> Subject: Re: [Techtoolslist] Fluke & Midway 8080 boards...
On 06/27/2014 2:31 PM, Rodger Boots wrote:
Is there On Jun 27, 2014 1:59 PM, "John Robertson" <jrr@flippers.com <mailto:jrr@flippers.com>> wrote:
Hi Andrew,
Well, I'm not sure where the problem is at the moment, I don't
recall this happening in the past so indeed it could be my 8080 pod that is part of the problem...
I did find one cute trick - I have the Kurz Kash fixture and cards
for Sea Wolf and while it does allow you to test all the functions the LED lights are difficult to get to light up to make sure that all the driver transistors work. So I put the 8080 pod into Learn mode for 10000h - 1000FFh which is the I/O port for the 8080 and the lights all turn on - at least the lights for the transistors that work...Cute. Otherwise you have to load the the I/O data with 0F or F0 at the correct !/O port address which I haven't gotten around to figuring out yet.
Still can't get the high end FFs at addresses FF0h to FFFh to be
stable though...
Is there ROM at high addresses? On an 8080 the ROM should be from 0000.
By high address I meant 0FFFh, not FFFFh. It was the high end of the ROM space which is 0 - 0FFFh in Sea Wolf. The RAM test (2000h - 3FFFh) works just fine.
Annoying.
John :-#)# -- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist
Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
The 9100 doesn't use scripts I'm afraid, so I have nothing to share. I use my generic test programs for 95% of my Pcbs including 8080 and I don't experience what you describe, other than when you have sip iris bus contention or incorrect rom type loading.. Andrew Welburn (mobile) www.andys-arcade.com
On 27 Jun 2014, at 20:59, John Robertson <jrr@flippers.com> wrote:
Hi Andrew,
Well, I'm not sure where the problem is at the moment, I don't recall this happening in the past so indeed it could be my 8080 pod that is part of the problem...
I did find one cute trick - I have the Kurz Kash fixture and cards for Sea Wolf and while it does allow you to test all the functions the LED lights are difficult to get to light up to make sure that all the driver transistors work. So I put the 8080 pod into Learn mode for 10000h - 1000FFh which is the I/O port for the 8080 and the lights all turn on - at least the lights for the transistors that work...Cute. Otherwise you have to load the the I/O data with 0F or F0 at the correct !/O port address which I haven't gotten around to figuring out yet.
Still can't get the high end FFs at addresses FF0h to FFFh to be stable though...
Any chance of sharing your Midway 9100 script with the group?
John :-#)#
On 06/27/2014 3:56 AM, Andrew Welburn wrote: John, there is no trick to Fluking 8080 Pcbs, they work as normal, no fudging necessary. I use a 9100 however, ymmv.
Are you perhaps using a device that isn't strapped properly on the myriad of jumpers? I think I may have seen what you describe happen before, and it was due to something like having a 2716 EPROM in, but the Pcb was strapped for 9316 roms..
Andrew Welburn (mobile) www.andys-arcade.com
On 26 Jun 2014, at 21:42, John Robertson <jrr@flippers.com> wrote:
Anyone remember what is needed to get valid memory reads on the 8080 boards? I seem to recall one has to set the gates to a state prior to doing a ROM test, but can't recall the process...perhaps someone has a script they can share?
At the moment the RAM test works fine, however any ROM space that has FF in it - on the high memory area (FFXh) gets random garbage inserted from the injection of some clock info on the data buss. The valid data locations in the ROM dont' appear to be affected. Tried adding a pullup resistor bank, no change. No ROMs, no change...
Thanks!
John :-#)#
-- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
participants (4)
-
Andrew Welburn -
David Shoemaker -
John Robertson -
Rodger Boots