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echo: suprafax
to: PATRICK MOORE
from: JONAS MAEBE
date: 1996-06-08 16:57:00
subject: SUPRA V.34 28.8K

Patrick Moore banged on his keyboard a messie to Jonas Maebe:
JM>I did try X00, but it was a very old version I believe. I just
JM>downloaded version 1.53 and I'll poll under DOS once again to see if
JM>it will make any difference. I also just installed the V1.300-13
JM>flash rom.
PM>         Both should help.
Still no difference. Under clean Dos (Frontdoor), I get with X00 a CRC error 
as soon as the comms protocol switches to 8192 bytes packets. It restarts 
then with 512, then 1024 and so on 'till 8192 without any crc error, but as 
soon as it reaches 8192, I get a CRC error again. Yet, under OS/2 in a 
dosbox, not a singel problem! I really can't understand it...
 PM> The TX level is the level your local modem is sending at the 
 PM> telephone network towards the remote modem.  The RX level is 
 PM> lower because its the signal from the remote modem minus all 
 PM> the telephone network loss.
Thanks, now I get it :)
JM>BTW: the BBS I called a few minutes ago (the one I got the flasher
JM>and the new X00 from) does have a Supra, and there AT%Q1 gives me the
JM>following info:
[great stats 8)]
JM>Supra still rules ;) And on that BBS I always get 28.8 send AND
JM>receive.  
 PM> :-)))
I've got the 1.400-04 beta now, and I can't but say that it's GREAT! I don't 
know what you guys did to the code, but the overall transmission speeds are 
really improved, especially when sending. Has there been some change in the 
compression algo? Because now, for the first 200-300Kb of every file 
(zip/arj/rar/...), I usually get a cps of about 5000 (this cps used to last 
only for the the first 10kb or so)! Then it drops to 3350-3500, at which it 
stays (at least for 1 Meg, and I don't suspect it to change still heavily 
after that). Also, the sending (in Terminate) is very irregular: nothing 
happens for about 1/4th of a second and then suddenly two or three bytes are 
sent. My guess is that this is just that the FIFO is updated only after 2 or 
3 bytes have been seent to the modem, but with the former flash rom this 
didn't occur. Further, something I've wondered about already for a long time: 
when the supra sends data (at any baud rate), you see the SD led flashing 
with regular intervals, but when receiving data (even when from another supra 
at 28.8), the RD led seems to be constantly on. Is this because the Supra 
sends in "blocks" and the other modem in a "stream" or something like that?
Cya,
           Gamefreak 
--- FMail/386 1.02
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