On 4/16/21 8:24 PM, Brian K. White wrote:
On 4/16/21 7:16 PM, John R. Hogerhuis wrote:
"not a screaming cpu"
On the one hand TS-DOS can timeout on delays. I think the glug-glug
performance of Wifi and Bluetooth makes it not work.
On the other hand, it's possible and Steve is concerned that a fast
sender could overrun the Model 100's receive buffer when responding
to . TPDD packets are about 128 bytes maximum, while the Model 100's
receive buffer is 64-bytes.
Unrelated, TS-DOS likes to give up because of DSR deasserted, another
complicating factor.
Since TPDD emulators have been functional for decades on hardware as
old as TRS-80 desktop PCs, so who knows. As to Powermac I'd be more
concerned the emulator causing buffering delays.
I wonder if TEENY uses the receive queue or it does direct I/O?
That's always a good diagnostic tool. You cannot trip up its
timeouts, because it doesn't implement any. So if TEENY has problems
I think it would mean buffer overrun on receive.
-- John.
It now comes out he's using softwindows in macos 9 to run the original
ms-dos desklink.com. And the serial port on that machine is really a
rs-422 port that can operate in a rs-232 mode, sort-of.
All bets are off. Was there ever any native macos-before-osx tpdd
servers? That would probably be best for his case.
He has not been able to get teeny to transfer a file. The symptoms
sound like missing DSR line in his special mac modem cable. But who
knows.
I told him about the option to generate a TEENY that doesn't need DSR
from the TEENY.EXE manual.
But ts-dos needs dsr too, and he's gotten that to work half the time so,
can't be missing dsr I guess. Who knows. I don't think anyone has ever
even claimed to support this setup. Certainly the desklink manual
doesn't, nor ts-dos, nor teeny. A powerpc mac running macos 9 using
softwindows to run a ms-dos app and a GeoPort for serial... It would be
neat if it works but if it doesn't, oh well. desklink only claims to run
on ms-dos, not even windows. The fact that it does work in windows and
in dosbox on linux at least on faster machines is just a bonus.
--
bkw
