On Aug 4, 2016 2:54 AM, "jim stephens" <jwsm...@jwsss.com> wrote: > > > > On 8/3/2016 10:58 PM, Brad H wrote: >> >> Thought I would post this here in case it reaches eyes my forum posts don't. So I finally got my hands on a SWTPC 6800! >> This machine is chock full of boards.. 4 ram boards, the cpu card (with SWTBUG ROM), MP-S, MP-C serial cards, a floppy controller, some little custom board, a sound card.. etc. >> This presents some challenges obviously, since the machine has been altered from stock it could be tricky getting it running. >> Before I had it stripped down, I tried powering up as is (i pulled the older MP-C card and put MP-S in slot 1). This produced little except for a string of random characters that would repeat every time I hit reset, exactly the same number. >> I tried stripping it down to CPU card, MP-S, and the RAM board designated as '0'.. but all I get at the terminal end is a single random character on power up. >> I then thought I'd try my luck putting the CPU card in my working MSI system (taking out its card). Nope. >> Now, because my CPU card has been modified to accomodate SWTBUG and possibly something else, I'm not sure if it'll even work in a stripped down config. Not sure about the interplay between boards. >> Anyway.. if anyone has any thoughts to point me in the right direction I'd be most appreciative. Ultimately I'd like to get this beast working with my CT1024 terminals. >> Brad >> > I saw an SWTPC booth registered at VCF West, maybe you should drop by. I'll look in and see what they have and maybe they can help too. > > Only SWTPC gizmo I have is one of their audio amplifiers somewhere in the pile. Picked up at TRW Swap Meet. > Thanks > jim
You need to start with the power supply. Verify it's ok. Then work through each card's jumpers to see how they are set. For example the MP-S has baud rate setting options, and the card can be used with a Teletype or RS232 terminal. 1200 is max baud. If you're getting a consistent but garbled output to the screen did you confirm the baud rate you're using matches the MP-S jumpers? All of this is well documented online, Mike Holley has a step by step set up on his site. A few years ago I retyped the entire code listing of TSC BASIC which can be downloaded into bare bones SWTPC 6800
