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n8vem-gg-archive:html-2013:may:msg00078

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Re: [N8VEM: 15916] custom rom for hazeltine terminal

  • To: n8vem@googlegroups.com
  • Subject: Re: [N8VEM: 15916] custom rom for hazeltine terminal
  • From: John Coffman «john…@gmail.com»
  • Date: Fri, 24 May 2013 08:27:25 -0700
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Nik,

One trouble I had with a Wyse terminal was that it needed ALL the RS-232 signals before it would operate.  It is possible that the Hazeltine terminal will not send keyboard characters unless one of the RS-232 signals in asserted.

My solution was to create a special cable for the Wyse terminal with DTR (DSR after going through a null modem) to (CD).  The signal voltage drops, but it is still within RS-232 limits, and the terminal started responding.

I also short RTS to CTS at the terminal connector.

–John





On 05/24/2013 04:01 AM, brizza wrote:

<blockquote>
Hi,

i'm building a custom rom with the current bios ,RomWBW v2.5, but the keyboard is not responding, video is fine. Odd since previous bios' all worked fine with this terminal. The only changes i need to make is the baud rate back to 9600 and floppy drive to FDM120. I have tried all 3 terminal types, ANSI,TTY and WYSE but none have keyboard reponse. Anything else i could try. The BAUD rate needs to stay at 9600 since that is the highest setting for this terminal.

Nik

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n8vem-gg-archive/html-2013/may/msg00078.txt · Last modified: by 127.0.0.1