HDOS Configur

[Darrell Pelan]

Hi,

Is there a way to set the terminal speed to 19.2k in HDOS 3? 

Also, is there any documentation on Maple? Joe T very kindly talked me through running the program but we couldn't get the H89 to receive data from my PC. It's working fine under CP/M so it's not a hardware issue.

Thanks,

  Darrell

[Joseph Travis]

I believe you will need to start with a freshly INITialized and SYSGEN'd disk.  When you boot for the first time the computer will wait for you to press the SPACEbar a few times for it to automatically determine and set the baud rate.  That baud rate will be written to disk and it will boot with that setting every time afterwards.

BR,

Joe

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[Glenn Roberts]

That should work, but another way is to patch the byte in the boot track where hdos "remembers" the previously set BAUD rate. For an already configured system this would be preferable. I've got to think there were REMark or BUSS writeups that talked about this back in the day, and probably a HUG utility to do it? I'd have to do some research... if I find something I'll let you know.

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[Mark Garlanger]

For HDOS, it is byte 5 and 6 of track 0, sector 0. Below is a photo from the Ultra ROM manual. Here it is showing to use "3" for the divisor. For 19200, it should be "6", and to verify, the current value for 9600 should be "12".

Mark

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[pel...@gmail.com]

Fantastic! Thanks for finding this. I looked at the REMark index and picked up about 60 pages of patches to eliminate hitting CR during the boot process and a lot of info about disk format and directory structure.

 

  Darrell

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Mark Garlanger
Sent: Saturday, March 18, 2023 8:44 PM
To: se...@googlegroups.com
Subject: Re: [sebhc] HDOS Configur

 

For HDOS, it is byte 5 and 6 of track 0, sector 0. Below is a photo from the Ultra ROM manual. Here it is showing to use "3" for the divisor. For 19200, it should be "6", and to verify, the current value for 9600 should be "12".

 

Mark

 

 

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[glenn.f...@gmail.com]

A quick check on my HDOS 3.0 system seems to verify that this didn’t change from HDOS 2 so this should still be the patch area.  I think if you set that byte to 00 the system will prompt you with the “SPACE” prompt and then try to figure out the BAUD from the response, but that code may not test 19,200 so best to manually patch with SDUMP.

 

• Glenn

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[pel...@gmail.com]

Thanks, Glenn! Worked like a champ on HDOS 3 and 2.

 

I appreciate your help.

 

  Darrell

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[pel...@gmail.com]

Hi Joe,

 

I came across this in my research. I know it isn’t HDOS, but figured the app worked the same. I’m still working support issues to work on MT Modem.

 

Darrell

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of Joseph Travis
Sent: Saturday, March 18, 2023 3:29 PM
To: se...@googlegroups.com
Subject: Re: [sebhc] HDOS Configur

 

I believe you will need to start with a freshly INITialized and SYSGEN'd disk.  When you boot for the first time the computer will wait for you to press the SPACEbar a few times for it to automatically determine and set the baud rate.  That baud rate will be written to disk and it will boot with that setting every time afterwards.

 

BR,

Joe

 

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[Joseph Travis]

Thanks Darrell !  Yes, I use Maple on both HDOS & CPM.  They operate the same.

Joe

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[norberto.collado koyado.com]

I have Maple information here:

 

http://koyado.com/Heathkit/Z67-IDE_HDOS_CPM.html

 

Norberto

 

From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of pel...@gmail.com
Sent: Wednesday, March 22, 2023 5:49 AM
To: se...@googlegroups.com
Subject: RE: [sebhc] HDOS Configur

 

Hi Joe,

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[Darrell Pelan]

Yes! That's where I got it. I thought I sent this privately... 

Sorry.

  Darrell