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devel / comp.os.cpm / Re: Linux -> CP/M XMODEM transfer timeout

SubjectAuthor
* Linux -> CP/M XMODEM transfer timeoutPaolo Amoroso
`* Linux -> CP/M XMODEM transfer timeoutDennis Boone
 `* Linux -> CP/M XMODEM transfer timeoutPaolo Amoroso
  `* Linux -> CP/M XMODEM transfer timeoutPaolo Amoroso
   `* Linux -> CP/M XMODEM transfer timeoutDennis Boone
    `- Linux -> CP/M XMODEM transfer timeoutPaolo Amoroso

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Re: Linux -> CP/M XMODEM transfer timeout

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Subject: Re: Linux -> CP/M XMODEM transfer timeout
From: paolo.amoroso@gmail.com (Paolo Amoroso)
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 by: Paolo Amoroso - Wed, 22 Jun 2022 17:50 UTC

I tried also turning on software flow control in Minicom and jumping to a shell from Minicom to execute sx -a test.txt, but still no joy with file transfers.

Re: Linux -> CP/M XMODEM transfer timeout

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Subject: Re: Linux -> CP/M XMODEM transfer timeout
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 by: Dennis Boone - Sat, 25 Jun 2022 02:36 UTC

> I tried also turning on software flow control in Minicom and jumping to
> a shell from Minicom to execute sx -a test.txt, but still no joy with
> file transfers.

What version of MFE's XMODEM are you using?

De

Re: Linux -> CP/M XMODEM transfer timeout

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Subject: Re: Linux -> CP/M XMODEM transfer timeout
From: paolo.amoroso@gmail.com (Paolo Amoroso)
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 by: Paolo Amoroso - Sat, 25 Jun 2022 10:17 UTC

On Saturday, June 25, 2022 at 4:36:21 AM UTC+2, Dennis Boone wrote:
> What version of MFE's XMODEM are you using?

On CP/M 3.0 I'm using version 2.7 patched by J4F, the Z80-MBC2 developer:

=========================
XMODEM 2.7 By M. Eberhard
=========================
Z80-MBC2 (CP/M 3 only)
patched ver. by J4F
=========================

Since the Z80-MBC2 runs at 8 MHz I tried running XMODEM with option /Z8, but the maximum argument it accepts is 6 (no improvement though, still timeout):

B>a:xmodem te.hex /r /z8

Bad value in command line

Re: Linux -> CP/M XMODEM transfer timeout

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Subject: Re: Linux -> CP/M XMODEM transfer timeout
From: paolo.amoroso@gmail.com (Paolo Amoroso)
Injection-Date: Sat, 25 Jun 2022 10:27:40 +0000
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 by: Paolo Amoroso - Sat, 25 Jun 2022 10:27 UTC

On Saturday, June 25, 2022 at 12:17:47 PM UTC+2, Paolo Amoroso wrote:
> On CP/M 3.0 I'm using version 2.7 patched by J4F, the Z80-MBC2 developer:

Here are the patches J4F applied to the XMODEM Assembly source:

; Z80-MBC2 patch by J4F
; Can run only with CP/M 3!!!
; ; (Search the string 'Z80-MBC2' to find changes)
; ...
CONSTMD equ 5ah ;Set CONST mode to 8 bit (Z80-MBC2 CP/M 3)
; ...
;---------------------------------------------------
;Set default CPU speed to 4MHZ if a Z80 is detected.
;(The user can later change this with /Z option)
;---------------------------------------------------
INIT:
; -----------------------------------
; Set the 8 bit CONST mode (Z80-MBC2)
; -----------------------------------
push psw
mvi a,CONSTMD
call GOBIOS
pop psw
;
; -----------------------------------
;
sub a ;test for 8080 or Z80
jpe IS8080
mvi a,4 ;Assume Z80s run 4 MHz
sta CPUMHZ
IS8080:
; ...
HLPEXT: call CILPRT ;print this message

; 123456789012345678901234567890123456789012345678901234567890123
db '=========================',CR,LF
db 'XMODEM '
db ((VERSION AND 0F00h)/256)+'0','.',(VERSION AND 0Fh) +'0'
db ' By M. Eberhard',CR,LF
db '=========================',CR,LF ; Z80-MBC2
db 'Z80-MBC2 (CP/M 3 only)',CR,LF
db 'patched ver. by J4F',CR,LF
; ...

Re: Linux -> CP/M XMODEM transfer timeout

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 by: Dennis Boone - Sat, 25 Jun 2022 13:58 UTC

> On CP/M 3.0 I'm using version 2.7 patched by J4F, the Z80-MBC2 developer:

Well, I don't see anything in the 2.9 change log comments that suggests
it would help here. A few other thoughts:

1. Anything clueful in dmesg?

2. Have you tried running the MBC2 at 4 MHz? Maybe with /Z4?

3. Have you tried the /Q option to XMODEM?

4. Do you have a different usb serial device to try?

I haven't had time to dig out my MBC2 yet, or I might be a bit more
useful here.

De

Re: Linux -> CP/M XMODEM transfer timeout

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Subject: Re: Linux -> CP/M XMODEM transfer timeout
From: paolo.amoroso@gmail.com (Paolo Amoroso)
Injection-Date: Sat, 25 Jun 2022 16:42:39 +0000
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 by: Paolo Amoroso - Sat, 25 Jun 2022 16:42 UTC

On Saturday, June 25, 2022 at 3:58:58 PM UTC+2, Dennis Boone wrote:

> 1. Anything clueful in dmesg?

No useful clues, just these basic entries:

[22559.559045] usb 1-1: new full-speed USB device number 3 using xhci_hcd
[22559.758833] cp210x 1-1:1.0: cp210x converter detected
[22559.770263] usb 1-1: cp210x converter now attached to ttyUSB0

> 2. Have you tried running the MBC2 at 4 MHz? Maybe with /Z4?

I switched the board to 4 MHz via firmware and also run transfers with /Z4, same timeouts.

> 3. Have you tried the /Q option to XMODEM?

Running XMODEM with the /Q and /C options still causes timeouts.

> 4. Do you have a different usb serial device to try?

I don't have other USB serial devices. I plugged the board to a different USB port of the Chromebox and it wasn't even recognized. But that port is a bit tight and I tried only a few times, as I didn't want to damage the board's connector.

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