RetroBSD

2.11BSD operating system for microcontrollers
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 Post subject: rz with TTerm
PostPosted: Wed Sep 16, 2015 6:07 am 
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Joined: Thu Nov 08, 2012 7:04 am
Posts: 2401
Location: Rapa Nui
Hi, I've tried again with TeraTerm 4.88 and fubarino USB console (v366). With this settings (TERATERM.INI) I get very good results:
Code:
; ZMODEM auto receive
ZmodemAuto=off

; ZMODEM parameters for sending
ZmodemDataLen=16
ZmodemWinSize=2048

; Escape all control characters in ZMODEM
ZmodemEscCtl=off

; ZMODEM log
ZmodemLog=off

; ZMODEM receive command
ZmodemRcvCommand=rz
SendBreakTime=3000

It seems the DataLen is important here, try also 16, 32, 64 - the higher the faster (but longer stoppages, even locks).
The WinSize could be also 256, 512..

The upload speed is around 17kB/sec with the smaller, and 33kB/sec with larger values.

What is important is with smaller values the upload is much smoother and it does not lock somewhere. I did dozens of ~MB uploads without a single lock or crash. I did even an upload with 8queens running in background and it worked.

The upload is not smooth however - you may observe small stoppages, but only a small fraction of a second. With large values it randomly stops (as reported many times in past) after a while.

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 Post subject: Re: rz with TTerm
PostPosted: Wed Sep 16, 2015 6:29 am 
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Joined: Wed Oct 10, 2012 11:01 pm
Posts: 1081
Location: Sunnyvale, CA
Not bad actually.
A few years ago I had good results with ZmodemDataLen=1024 and ZmodemWinSize=31.
It was not RetroBSD though, but some other ancient Unix station.


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 Post subject: Re: rz with TTerm
PostPosted: Wed Sep 16, 2015 9:03 am 
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Joined: Thu Nov 08, 2012 7:04 am
Posts: 2401
Location: Rapa Nui
The next step is to elaborate with the serial UART again.. So maybe other figures will apply :)

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