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Needed: Help disassembling Williams Test ROM
by John Robertson 06 Jun '03

06 Jun '03

OK, I know Williams doesn't like this, however Ted Estes hasn't got the info I need so here is my problem: Williams produced a Test ROM (2532) that covered system 3 - through 7 and the image is split in two. 0000 - 07FF is for the earlier games (two LED indicators) 0800 - 0FFF is for System 7 (seven segment display) Using this in a game like Black Night (second image used) shows a count from 0 - 9, and then the display blinks twice and shows a steady 0. All the tests from 0 - 9 seem to emulate the same tests that BK shows in the little book, however what is NOT documented is the double blink! I thought it might be an interrupt test, but the IRQ timing is correct... What I have is two seemingly identical boards - one that boots fine and the test shows the correct sequence, and a second that counts correctly but won't do the double blink nor does it boot. Fluke 9010A claims RAM ROM and I/O are fine. (in case you were curious) So what I am left with it trying to figure out what the double blink portion of the test was. Ted Estes thought it had no meaning - but he had never been able to find the docs on this test Eprom when he worked at Williams (seems to have done a thorough search!) - but now he is not so sure. So I am trying to disassemble the Eprom image (800 - FFF) in an effort to find what that test might be. Unfortunately I am NOT any good at this and was hoping that someone with experience in this would be interested in helping document this Test Eprom. Sections of it make sense to me, like RESET clears all the PIAs, but then it wanders off to check the contents of assigned RAM locations and I don't know how to track this efficiently...but am happy to provide a table of ROM/RAM and I/O ports. This is a 6800 based system (6808) with five 6821's, one IRQ generator (1k077hz) running at 1Mhz. I have the Test ROM from Two Bit, it is the same Williams program for the 1st half (0-7FF), the second (800-FFF) is different though, and not very well documented... Thanks if anyone can help... John :-#)# Thanks!

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9100 & SCSI drives
by John Robertson 04 Jun '03

04 Jun '03

Just talking with Shy - of www.Navatek.com - that he has been able to format 1G SCSI drives just fine on 9100FT's although he has no idea what the formatted size is as the 9100 does not report that info back... He has not tried it on the 9100A so is not sure if you can drop one in. The other thing he mentioned is that the machines used the Western Digital drives, not the earlier Miniscribes, but he believes that is not important. He is interested in the Keyboard adapter although he has not sold any keyboards - just wants the option I think. John :-#)#

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RE: 9100 keyboard wedge (udpate 2)
by Chris Toseland 03 Jun '03

03 Jun '03

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9100 keyboard wedge (udpate 1)
by David Shoemaker 02 Jun '03

02 Jun '03

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Fluke 9100 keyboard adapter (call for interest)
by David Shoemaker 02 Jun '03

02 Jun '03

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Taito Space Invaders Manual needed
by pc2jamma 02 Jun '03

02 Jun '03

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Manual archives...
by John Robertson 01 Jun '03

01 Jun '03

Found a most interesting and large free manual site (Ham radio gear and older test items): http://bama.sbc.edu/ And they have a link to other manual download sites...read the notice about the intent of the site, seems like a nice group of people! John :-#)#

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Scans of some 9100A / 9010A tech docs available
by David Shoemaker 31 May '03

31 May '03

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Arium ML4400 cope image upload
by John Robertson 31 May '03

31 May '03

Just got a copy of the installation floppy (Teledisk format) for the Arium and have stuffed it into the ML4400 sub-directory. Perhaps of use to anyone else that is playing with this logic analyzer... John :-#)# How to subscribe or unsubscribe from TTL To do either you send email to "MajorDomo(a)flippers.com" and in the body you state either "Subscribe techtoolslist" or "Unsubscribe techtoolslist", note that the Subject is "" (Blank)... FTP site is: ftp://ftp.flippers.com/TTL/

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Data I/O 29A vs. 29B
by Joe 30 May '03

30 May '03

Can promlink be used with the Data I/O 29a? If not, what can be? What other differences are there between the A and B? Also, what are the pinouts for the cable? Or is a simple null modem or RS-232 cable useable? Thanks, JB

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