Search results

Greetings! I have a full KIM-1 stack from MTU, including about 6 boards. One that I'm currently missing (DOA and out for repair, hopefully) is the K-1013 floppy disc controller. If anyone has a K-1013 that they'll never use again, or has a line on one, please let me know! Thanks! Dave Plummer

Greetings! I have an Altair 8800 that was working perfectly; I R&R'd a board and now it won't boot into BASIC from ROM. I've stripped the machine down to just the 88-RBM and the CPU cards installed at this point: Here's what I know: 1) The first byte of the ROM is F3, or 363 octal. 2) With...

Greetings! I've installed a QBONE into my PDP-11/73, and can connect to it. I can boot RT11 using the QBONE script. Starting any other system, from BSD211 to VMS, I haven't figured out yet. My PDP winds up at this prompt: When I run the 211BSD script, it says this: I'm not sure what it's...

I received the PDP-11/73 that a viewer kindly donated, got it spiffed up with Simple Green and compressed air, and proceeded to power it up. Dead, not a whimper. So having just seen Usagi Electric’s experience with a very similar looking MicroVAX, I checked the RIFA caps in the power supply and...

I received the PDP-11/73 that a viewer kindly donated, got it spiffed up with Simple Green and compressed air, and proceeded to power it up. Dead, not a whimper. So having just seen Usagi Electric’s experience with a very similar looking MicroVAX, I checked the RIFA caps in the power supply and...

I have an MFM drive emulator, and was wondering if it's possible or practical to perhaps load some of the boot disk images from the pidp-11 onto the SD card and boot them on the PDP-11/23 Has anyone attempted this before? Or failing that, are there images of BSD or System V that I could...

I've assembled the guts of an 11/23 in a backplane and connected it to a front panel, and have it coming up to the boot prompt. I have an HD with an image of RT/11 on it (or maybe RTS), but the M7555 has a 50-pin cable and the drive is the standard 2-cable ST-506. I think there's a plane in...

Greetings! The BA23 chassis I just purchased was lost in shipping :-(. I have the rest of the internals, and can make a switch panel, but was really hoping to have an original setup. If anyone is tiring of their complete PDP-11/23 or MicroPDP, or any complete PDP system for that matter, please...

Anyone happen to have one kicking around that they're not using? I've got a dead one out for repair, but would like a spare!

Greetings! I just bought a Model 1 with expansion unit and ordered a floppy drive from eBay. Can anyone tell me what I need for cables to connect them? Also, where on earth would I get some kind of TRS_DOS image (or something better)? In theory I should be able to get tape images over via...

I'm stoked - I found and purchased a Model 1 Level 1 4K unit with a 0K expansion unit and monitor (ie: the oldest and most ancient system available), a 26-1001. Anyhow, it was still in the original packaging, still in the Radio Shack boxes, cables still in wrapping, everything. It had been...

The first computer I ever touched and tinkered with was the Model 1, and while I went on to write a lot of x86 code (I was at MSFT on MS-DOS) I've never owned a TRS-80 until now! I managed to find a Model 1 with monitor and expansion base unused still in the original boxes, so once confirmed...

I'm hoping to use CBMCommand to copy files from a petSD+ to my 8050. From the docs I don't think it can copy entire 8050 disks, but it should be able to copy files... stop me now if anyone knows that doesn't work! In any event, I'm stuck pretty early - I don't know how to move between panels...

If you were programming in BASIC, you'd use a secondary address (SA) of 0 for read, 1 for write, and 15 for the command channel to the device. All of the asm code I've found, however, seems to set #$60 in the byte. So it's #$60 for read, #$61 for write, and #$6f for the command channel. To...

I was writing some code to ultimately read the real-time clock from a petSD+, but I only got this far: LDA #$01 ; dir name length LDX #<dirname LDY #>dirname JSR $FFBD ; SETNAM to $ ...and SETNAM doesn't seem to exist there on the PET. It'd be fine...

I have a nice graphical clock app I wrote that works perfectly in VICE, of course, but not on the real PET when I flash it into a ROM and try to run it that way. Using the really basic monitor in the PET I can verify the code's there but that's about it. Most likely i have things like inline...

My PET2001N 32K, BASIC 2, has only two empty ROM slots, and I thought it should be three. Looking at this table: ROM sockets: UD3 9000-9FFF UD4 A000-AFFF UD5 B000-BFFF UD6 C000-CFFF BASIC UD7 D000-DFFF...

Subject line covers most of it, but i'd like to be able to do two things: a) If possible, load a soft image of BASIC4 into memory and use it, or b) Burn an EPROM of BASIC4 and use it I'm not entirely sure this is possible on a 2001-N, nor am I sure what I need. Any tips would be appreciated...

I just purchased a (perfectly mint!) PET 2001-32, but it has the white screen. I thought the white screens were early PETs, but I didn't think the 32K units were out at that time. Were the 32K units available from the beginning perhaps? Or how'd I wind up with a white phosphor 32K 2001...