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Hi All; I have my Z80 Board and I just got the SBC Z-80 Board.. To help things along the way, while I wait for the Pololu Power Supply to arrive (it left Nevada and then went to California) on it's trip to here, in Colorado.. So, I have commented out what I (for now) would not need in the SBC...

Hi All; Hopefully, this will be the last of the problems, I am having with my Z-80 System, I am running out of Boards to have problems with.. I have John;s Console Input / Output Board, and the Output seems to work Fine.. But, the Input Doesn't seem to work, It shows on the first two Displays...

Hi All; I now have John's IDE Board, Version 3a, and it doesn't work, I like to raise my Frustration Level.. And like most of the other Boards, I can't get it to work, I got the Z-80 CPU and the Serial Boards to work.. And since I have been having trouble with the ZFDC Floppy Controller, I...

Hi All; I have my other serial card working, and now for this one with John's Monitor.. I have it Displaying correctly, But, it won't show input.. I am wondering How or which status bits do I hook up to which Data bits to make it work correctly, with John's Monitor Program ?? THANK YOU Marty

Hi All; I have been talking to John and I have taken up too much of His Time, So Thank You John, for Your Help.. I have been re-building His ZFDC Board, and I have been doing each of the Steps on His Web page.. So, I have gotten to the point where I test as I build each step , and it has...

Hi All; I have John Monahan's S-100 Z80 CPU Board Ver 02, and I am trying to make John's Serial IO Board Version 3 work together.. It will not Display anything on Tera-term, but Pressing any key on Tera-term makes it thru to the SCC IC.. But, if I take out the SCC IC and connect pins 13 and...

Hi All; What I want to do is using John's Z-80 Board and His Disk Controller Board, make an Equivalent North Star type of System, That I can Run North Star Basic and use that to Compile Pascal, like what Kim-Man Chung and Herbert Yuen did in Byte Magazine Sept., Oct., and Nov., 1978.. Would...

Hi All; I am wondering if Someone has a copy of North Star Disk Basic, Ver 6.3 or there about.. I would need to Dis-assemble it, and see if I can use it on my Altair System.. I have a project, that originally used this basic, and so this is what would be needed to possibly make it work...

Hi All; After some encouragement from another member here on this forum.. I am sharing what I have been up to since late last fall.. I have been Wire-wrapping on two boards, a TTL equivalent of the 8080 Microprocessor .. I did Not do the Schematic for it myself, It is from another (now )...

Hi All; I have 7 DEC H744 5 Volt 25 Amp Power Supplies Need another Good Home.. These came from my PDP 11/40 and PDP 11/45.. I do not Know if they are any good.. I don't want to just throw them Out, but the city has taken over our Trailer Park and I have to do a Massive Cleanup / Sale...

Hi All; I have 7 RL02 Diskpacks that need to go to another Good Home.. They are of Unknown shape, they will most likely have dust and they will be needed to be taken apart and given a thorough Cleaning.. They are of unknown readability and I don't know If there is any Data on them.. I would...

Hi All; It looks like it's that time of Year Again.. I am going to see what Instructions work and what Instructions do not work.. Also, Does anyone know of any Document that had what mirco-instructions, go with what Instructions ?? Here is the link for part 5 --...

Hi All; I am using a Breadboard to check out the Ic's from my Alpha-1 Board for the Write and most of the Read Sections.. I am building it an IC at a time and for now, I am skipping the Op Amps and such sections and attaching the Read after the Write circuitry.. And I will use a 555 for input...

Hi All; I have wire-wrapped an 8800b CPU Card, that IS running on my Altair 8800 Machine.. I have based this on the Pictures from Tom Sanderson's site of Tom Durston's Altair 8800 Machine and Much Help from Martin Eberhard, finding a Problem I had with my Board.. So, I am using a modified...

Hi All; I don't remember who pointed out the Link for Altair Basic Version 1, But, I want to Thank that person for the link.. I have been looking for it for many, many years.. I am copying it into one of my Notebooks, and I have up to page 002 copied.. It has a little more than 011 pages...

Hi All; I have an Old Alienware area 51 M766 model.. A Pentium 4.. It came with No Power supply, after two tries, I got a good Power Supply.. While Setting up the Bios, it glitched, and (I think), re-wrote some or all of the Bios Eprom.. Fixed, see below.. What I have found from Dell Doesn't...

Hi all; Even though I can't afford it at Present, I am asking now to give me an Idea of its availability and it's price.. What I need is a Momentary Switch for my PDP 11/45.. AIRPAX # 028-317-0002 .. Or Equivalent.. THANK YOU Marty

Hi All; Has anyone heard of this site or tried it ?? There are two versions of it one for 8086 and one for 80386.. I have had the 8086 version running on my 80286, with Floppy Diskette, no Hard Drive at this time.. My understanding is it a ReWrite of Unix version 1 that was for the PDP 11...

Hi All; I have a CDtek 286, with a pair of Eproms 27256's, and I want to know where the beginning of the Eprom is addressed with Debug.. When I boot it up it says the Eproms have a problem, and I read one of them in my Eprom Reader, so I am hoping it's just a parity error and so I just can...

Hi All; Has anyone else seen or visited this site ?? I had kept up with it some years ago, and then it went Dark, but it seems to be active again.. http://insanity4004.blogspot.com/2012/06/worlds-first-microprocessor.html THANK YOU Marty