Re: Unsubscribed from the list due to too many bounces
Thanks Adrian I feel better already :-) Marc > On May 17, 2022, at 8:35 PM, Adrian Stoness wrote: > > > its an issue with gmail according to jaywest dont think u can do anything > about it > its in his ballpark > theres a thread discussing the issue so ur not alone > thread "Cctalk subscription disabled" > > > > > >> On Tue, May 17, 2022 at 10:26 PM Curious Marc via cctalk >> wrote: >> I have been auto-rejected from the list again, due to too many bounces, >> whatever this means. But I swear I have been a good boy and did not bounce >> too much! This is a plain vanilla gmail account by the way. Does anyone have >> any idea why this keeps happening? Anything I can do about it? >> Marc
Re: Unsubscribed from the list due to too many bounces
its an issue with gmail according to jaywest dont think u can do anything about it its in his ballpark theres a thread discussing the issue so ur not alone thread "Cctalk subscription disabled" On Tue, May 17, 2022 at 10:26 PM Curious Marc via cctalk < cctalk@classiccmp.org> wrote: > I have been auto-rejected from the list again, due to too many bounces, > whatever this means. But I swear I have been a good boy and did not bounce > too much! This is a plain vanilla gmail account by the way. Does anyone > have any idea why this keeps happening? Anything I can do about it? > Marc
Unsubscribed from the list due to too many bounces
I have been auto-rejected from the list again, due to too many bounces, whatever this means. But I swear I have been a good boy and did not bounce too much! This is a plain vanilla gmail account by the way. Does anyone have any idea why this keeps happening? Anything I can do about it? Marc
Re: anyone ever connect a TU58 drive to a PDT-11/150 terminal port?
On 4/15/2022 2:48 PM, Lee Gleason wrote: I've been tinkering with a PDT-11/150 lately. It's a little inconvenient to work on, since it doesn't have a simple way to transfer files back and forth (KRTMIN doesn't work when transferring files to the box, just from the box, for some reason I haven't been able to puzzle out, and pasting text into a KED screen or a PIP command usually overflows my terminal emulator). It occurred to me that the first application terminal line on the 150 is at 176500,300, the same as the default for a TU58's DL11. It's a very DL11 like interface, register wise. I'm wondering, if I could hook up a TU58 emulator and use it to move data back and forth to the 150. Has anyone had occasion to try this? Any advice on how to get it to go would be appreciated, since I know very little about RT11. -- Lee K. Gleason N5ZMR Control-G Consultants lee.glea...@comcast.net OK, replying to my own post here, on the off chance that there are any other PDT-11 hobbyists out there. I gave this a try and it works pretty well. The DD driver on the PDT-11/150 will talk to a TU58 emulator on Terminal 1 just fine (presumably, it would talk to a real TU58 as well). It only works at 2400 baud, but, it's still pretty useful for moving software on and off the box. With the "big" TU58 patch to the DD driver, it's also possible to store lots of RT11 software or data (65000 or so blocks worth) on a virtual TU58 and load from there, rather than switching floppies. See https://rsx11.blogspot.com/2022/05/pdt-11150-and-tu58.html for the long boring story about figuring this out. == Lee K. Gleason N5ZMR Control-G Consultants lee.glea...@comcast.net
Re: DX/IAS software
> On May 17, 2022, at 1:27 PM, Lee Gleason via cctalk > wrote: > > I have a tape from the late 70s that contains DX/IAS, a package from DEC > that allowed terminal emulation and file transfer to/from WPS on DECmates to > IAS systems. Not too many IAS systems out there these days, but the tape > includes sources, so it should be easily adaptable to RSX systems, ... I think there are IAS kits on Bitsavers. Porting to RSX: most straightforward would be to RSX-11/D since that's basically what IAS is. To /M or /M-plus may not be a whole lot harder, I don't have experience with that. paul
DX/IAS software
I have a tape from the late 70s that contains DX/IAS, a package from DEC that allowed terminal emulation and file transfer to/from WPS on DECmates to IAS systems. Not too many IAS systems out there these days, but the tape includes sources, so it should be easily adaptable to RSX systems, as well as giving some insight in general to the DX communications protocol. Anyone have a tape drive still running that could take a stab at reading this tape? It's not marked as to density, but it looks like one of those small 800 BPI tapes DEC used to deliver small packages on around that time. -- Lee K. Gleason N5ZMR Control-G Consultants lee.glea...@comcast.net
Re: Replacement for a DEC 7474 Chip
On Tue, May 17, 2022 at 12:35 AM ben via cctalk wrote: > Did DEC not use a few Non TTL chips to reduce I/O loading on the bufferd > lines? > DEC used non-TTL buffer chips for bus interface (Omnibus, Unibus, Qbus, and external buses like Massbus). Most of the other SSI/MSI logic chips are TTL or TTL-compatible. TTL buffers were usually used where higher fanout was needed on a module, or on non-bus backplane connections.
Re: Replacement for a DEC 7474 Chip
On 2022-05-16 1:50 p.m., Eric Smith via cctalk wrote: On 2022-May-15, at 3:53 PM, Eric Smith wrote: I specifically said 74x74. Early TTL flipflops were very crude by comparison. On Mon, May 16, 2022 at 11:28 AM Brent Hilpert via cctalk < cctalk@classiccmp.org> wrote: pre-TTL != early TTL No, but 7470, 7472, 7473, and 74948 were _very_ early and were also very crude, as were their later L and H variants. 7474 was slightly later, and less crude. It should also be noted that the 7400 series was NOT the first commerical TTL integrated circuits. The earlier TTL flip-flops were even more crude, but I imagine the engineers that used them were nevertheless delighted at the advance over RTL and DTL. Did DEC not use a few Non TTL chips to reduce I/O loading on the bufferd lines? Ben.
