Re: TC08 DECtape bootloader question

2021-03-20 Thread Kyle Owen via cctalk
On Sat, Mar 20, 2021 at 7:19 PM Kyle Owen wrote: > However, it appears as though word count will be hit by the loading of the > first block. In fact, my instrumented version of SimH says it's overwritten > with a zero. If that's the case, it would seem as though the word count > overflow flag

TC08 DECtape bootloader question

2021-03-20 Thread Kyle Owen via cctalk
My understanding of the OS/8 TC08 bootloader (MI8-EC) is as follows: 0. Rewind tape 1. Set current address (07755) to 07600 2. Set word count (07754) to -0200 3. Read block 0 and wait for flag 4. Continue executing at 07600 However, it appears as though word count will be hit by the loading of

Re: DECtape ancestry

2021-03-20 Thread Paul Koning via cctalk
> On Mar 20, 2021, at 4:21 PM, Kyle Owen via cctalk > wrote: > > On Sat, Mar 20, 2021, 16:13 Paul Koning wrote > >> Speculating here since I have no direct knowledge: the DECtape format >> allows read and write in either direction, while LINCtape only allows read >> and write forward. The

Re: DECtape ancestry

2021-03-20 Thread Kyle Owen via cctalk
On Sat, Mar 20, 2021, 16:13 Paul Koning wrote > Speculating here since I have no direct knowledge: the DECtape format > allows read and write in either direction, while LINCtape only allows read > and write forward. The bidirectional I/O capability was part of DECtape > format from the start,

Re: DECtape ancestry

2021-03-20 Thread Paul Koning via cctalk
> On Mar 20, 2021, at 4:07 PM, Kyle Owen via cctalk > wrote: > > Why did DEC not use the LINCtape format for the PDP-8? I assume maintaining > format compatibility between their low, mid, and high range systems was > important to them? I suppose there was no other good solution to >

Re: DECtape ancestry

2021-03-20 Thread Kyle Owen via cctalk
Why did DEC not use the LINCtape format for the PDP-8? I assume maintaining format compatibility between their low, mid, and high range systems was important to them? I suppose there was no other good solution to transferring large files across different DEC platforms than to use magnetic

the question

2021-03-20 Thread Stan Sieler via cctalk
Hi, I just wanted to thank Tony for asking the question (disability vs. masks) and particularly wanted to thank Robert for the kindness of answering it! I learned something today! Stan

ODE 2.1.1 documentation

2021-03-20 Thread Ben Huntsman via cctalk
Hello! Does anyone have any old documentation for ODE 2.1.1, or relatively close versions? I know "newer" versions have been released and have documentation available, but there are some changes in some of the config files that are very different from older versions. For example when

Re: VCF Swap Meet in Wall, NJ

2021-03-20 Thread jim stephens via cctalk
On 3/19/2021 7:00 PM, Bill Degnan via cctalk wrote: But, there have been no verified accounts of giant squid attacks in Wall, NJ. I know Evan is doing a lot of train installation at his house, but I suspect that and the Miata are distractions so we don't see the large pool sized aquarium in

RE: VAXstation 2000 network & hardware guides (English & German)

2021-03-20 Thread Dave Wade G4UGM via cctalk
These arrived this morning and they are scanned and OCR'd here:- https://1drv.ms/u/s!Ag4BJfE5B3onlY9td7hHhHPnUKV2bA?e=hDKwES I think I can scan at lower resolution and/or grey scale as these are a bit on the huge side Dave > -Original Message- > From: dave.g4...@gmail.com > Sent: