Image Map Image Map
Tab Content
  • falter's Avatar
    Today, 09:10 PM
    falter replied to a thread Mek6800d1 in Other
    One other question -- should my D1 be able to read in programs from my PC terminal (sent as text files) the way my 6800 does? I've tried loading in...
    38 replies | 993 view(s)
  • falter's Avatar
    Today, 09:08 PM
    falter replied to a thread Mek6800d1 in Other
    No.. There is a custom board attached to the D1 that was purpose built by the previous owner for reading in data from some old pneumatic tube...
    38 replies | 993 view(s)
  • falter's Avatar
    Yesterday, 10:09 PM
    falter replied to a thread Mek6800d1 in Other
    I kind of wondered. I tried entering unique values for the different address ranges I was working with and it seemed to keep it all.. I don't see...
    38 replies | 993 view(s)
  • falter's Avatar
    Yesterday, 09:31 PM
    falter replied to a thread Mek6800d1 in Other
    I was playing around a bit more with this D1 and am a bit confused. I might not be understanding how much RAM I have but I thought fully loaded only...
    38 replies | 993 view(s)
  • falter's Avatar
    Yesterday, 12:09 PM
    Was thinking about it. Haven't been huge on CP/M machines in the past but the Superbrain is just a neat looking machine and the later models look...
    6 replies | 227 view(s)
  • falter's Avatar
    Yesterday, 08:23 AM
    falter replied to a thread Quest COSMAC ELF in Other
    No.. at least, not according to my logic probe. On power up, pin 21 is low. When I hit INPUT, it goes high.
    80 replies | 2716 view(s)
  • falter's Avatar
    Yesterday, 07:01 AM
    falter replied to a thread Quest COSMAC ELF in Other
    Seem to work as described. The Q LED is off by default when I turn the ELF on so the first program has no visible effect. The second one turns it...
    80 replies | 2716 view(s)
  • falter's Avatar
    October 15th, 2017, 08:21 PM
    falter replied to a thread Quest COSMAC ELF in Other
    Was looking at the original PE article and had a brainwave. In the article there is a short test program you use to cause the Q LED to go of when...
    80 replies | 2716 view(s)
  • falter's Avatar
    October 15th, 2017, 03:01 PM
    So I've been finding here and there Apple II auctions of the past to add to my spreadsheet of sales... and I'm a bit confused. Ebay generally seems...
    1 replies | 86 view(s)
  • falter's Avatar
    October 15th, 2017, 09:14 AM
    falter replied to a thread Quest COSMAC ELF in Other
    Probably not CPU. I swapped with a known good 1802 and same deal.
    80 replies | 2716 view(s)
  • falter's Avatar
    October 15th, 2017, 09:13 AM
    falter replied to a thread A strange SWTPC MP-A card in Other
    So perhaps I need to configure a RAM board for $F000 and beyond? I thought maybe that 2128 would cover that but maybe not?
    3 replies | 124 view(s)
  • falter's Avatar
    October 15th, 2017, 08:56 AM
    falter replied to a thread Quest COSMAC ELF in Other
    Is it possible a malfunctioning 14508 could be pulling things high on that bit? I know for sure the RAM is ok.. I've tested it repeatedly with my...
    80 replies | 2716 view(s)
  • falter's Avatar
    October 14th, 2017, 07:51 PM
    falter started a thread A strange SWTPC MP-A card in Other
    Okay here's another weird one from the pile. It's an MP-A board, but it has been modified: It's been heavily modified to run a 2716 with...
    3 replies | 124 view(s)
  • falter's Avatar
    October 14th, 2017, 04:55 PM
    falter replied to a thread Quest COSMAC ELF in Other
    Hmmmmmmmm I'm wondering if I diagnosed correctly here. While I'm waiting for replacement 4508s, I thought I'd test the Quest ELF out with the...
    80 replies | 2716 view(s)
  • falter's Avatar
    October 13th, 2017, 05:11 PM
    falter replied to a thread Mystery SWTPC card in Other
    Thanks Chuck. I kind of wondered. I've not yet heard of any direct operation of the 6800 with keyboard.. seems it was always meant to use a...
    8 replies | 217 view(s)
  • falter's Avatar
    October 13th, 2017, 01:32 PM
    falter replied to a thread Mystery SWTPC card in Other
    Here's the other side of that board if it tells us anything: I have another board that came with the same system.. that one is just a 6820...
    8 replies | 217 view(s)
  • falter's Avatar
    October 13th, 2017, 09:19 AM
    falter started a thread Mystery SWTPC card in Other
    Been trying to figure out what this is: I initially thought (hoped) it was a parallel card as I could use one for my SWTPC PPG joystick...
    8 replies | 217 view(s)
  • falter's Avatar
    October 13th, 2017, 08:00 AM
    Thanks! Is there anything more desirable about the original Superbrain vs. the II?
    6 replies | 227 view(s)
  • falter's Avatar
    October 13th, 2017, 06:52 AM
    Googled around for a bit but couldn't find answers. The Intertec Model xx machines (30, etc)... are these successors to the Superbrain? Are they...
    6 replies | 227 view(s)
  • falter's Avatar
    October 11th, 2017, 07:08 AM
    falter replied to a thread Quest COSMAC ELF in Other
    Yeah I caught that.. the article copy I have has '4058' but the owner scratched that out and put '4508'. 4508 is what I searched for, not 4058. I...
    80 replies | 2716 view(s)
  • falter's Avatar
    October 10th, 2017, 05:51 PM
    falter replied to a thread Quest COSMAC ELF in Other
    Weird.. I found some on ebay today with one quick search that absolutely *did not* work. I don't know what it is with ebay.. there's no way all...
    80 replies | 2716 view(s)
  • falter's Avatar
    October 10th, 2017, 06:54 AM
    falter replied to a thread My other COSMAC ELF in Other
    Ok thanks!! I will play with R1 and R2. I'm hoping I can find a shorter test program as it is tedious to key in the example. I did set my...
    8 replies | 285 view(s)
  • falter's Avatar
    October 9th, 2017, 12:54 PM
    falter replied to a thread My other COSMAC ELF in Other
    Thanks Dave.. I have everything except the 2N3904.. will have to get one from somewhere. Well, I'll check around.. might have it on one of my scrap...
    8 replies | 285 view(s)
  • falter's Avatar
    October 9th, 2017, 12:50 PM
    falter replied to a thread Mek6800d1 in Other
    Yup. Okay.. thanks for all the help guys. This board seems to be working normally. Back to the Pixie. :)
    38 replies | 993 view(s)
  • falter's Avatar
    October 9th, 2017, 12:36 PM
    falter replied to a thread Mek6800d1 in Other
    Ahhhhhhh.. that was it! Thanks so much! I'm so used to SWTBUG.. you just M 0000 for example and then if you want to edit contents there you just...
    38 replies | 993 view(s)
  • falter's Avatar
    October 9th, 2017, 12:13 PM
    falter replied to a thread Mek6800d1 in Other
    So I had another MCM6830P8 from a box of parts that came with my other SWTPC machine. Unfortunately, it had been stored in moist conditions and the...
    38 replies | 993 view(s)
  • falter's Avatar
    October 9th, 2017, 10:27 AM
    falter replied to a thread Mek6800d1 in Other
    Thanks Dave. I took your advice and started going through that listing. I did find two or three differences - however, I wonder if that is...
    38 replies | 993 view(s)
  • falter's Avatar
    October 9th, 2017, 09:23 AM
    falter replied to a thread My other COSMAC ELF in Other
    It is a 3.579, and I think he's using the divide by 2. I'm being told that the circuit as designed was not really ideal for direct to composite...
    8 replies | 285 view(s)
  • falter's Avatar
    October 9th, 2017, 09:08 AM
    falter replied to a thread Mek6800d1 in Other
    Many thanks! I've watched your video a few times and enjoyed it immensely. It was what convinced me I had to have a D1! I was up until midnight...
    38 replies | 993 view(s)
  • falter's Avatar
    October 9th, 2017, 07:43 AM
    There are over half a million II+ units produced. They are not rare and I personally would not pay more than $100 for a semi decent one.
    12 replies | 619 view(s)
More Activity
About falter

Basic Information

About falter
Location:
Vancouver, BC

Statistics


Total Posts
Total Posts
2,085
Posts Per Day
0.85
General Information
Last Activity
Today 10:39 PM
Join Date
January 21st, 2011
Referrals
0
View falter's Blog

Recent Entries

The Ebay Follies

by falter on June 25th, 2017 at 10:09 AM
All hail the $3000 Apple II+!

http://www.ebay.com/itm/142424958928
Categories
Uncategorized