[sebhc] HDOS sysgen questions (and problems)

Francisco Rabazas huskycan at terra.es
Thu Oct 19 00:08:54 CDT 2006


When I try to download the documents requests me user and password
Which the user is?
Which the password is?


----- Original Message ----- 
From: "Glenn Roberts" <gfroberts at adelphia.net>
To: <sebhc at sebhc.org>
Sent: Thursday, October 19, 2006 3:47 AM
Subject: Re: [sebhc] HDOS sysgen questions (and problems)


> yep it's normal.  if you enjoy reading source code check out
>
> http://www.sebhc.org/archive/documents/software/HDOS-2/HOS-1-SL_595-2466-01/INIT.PDF
>
> the ABR routine (Auto Baud Rate Selection, line 1938) cycles the UART 
> through various BAUD rates and waits for a reading that doesn't cause an 
> error, then sets that as the default BAUD rate. 25  years ago I could have 
> pointed you to the code that writes this back to the boot track (so that 
> on subsequent boots you don't have to hit space) but now I'll have to 
> leave that as an exercise to the reader! (it's in there somewhere).
>
> If you were fortunate enough to have an H8 you probably avoided this trap 
> ... the code spells out "SPACE" on the LEDs as a hint to hit the space 
> bar!
>
> The manuals are also in the SEBHC archive. the Bootstrap procedure is 
> described at:
>
> http://www.sebhc.org/archive/documents/software/HDOS-2/software_ref_manual/HDOS_vol_1_ch_1.pdf
>
> starting at page 1-13.
>
> - Glenn
>
>
>
> Bob Shannon wrote:
>> Doh!
>>
>> So it was working all along!?
>>
>> Clearly I have a lot of reading to do.
>>
>> So it appears that once its figured out the baud rate, the O/S
>> patches itself, and does not auto-baud when you re-boot the disk?
>>
>> After pressing the space bar twice, I got the BOOT text and
>> HDOS sign on messages.  When I rebooted that same floppy
>> later on (without powering off) it simply booted up automatically.
>>
>> No need to press the space bar. Is this normal?
>>
>> ----- Original Message ----- From: "Mark Garlanger" <garlanger at gmail.com>
>> To: <sebhc at sebhc.org>
>> Sent: Tuesday, October 17, 2006 5:08 PM
>> Subject: Re: [sebhc] HDOS sysgen questions (and problems)
>>
>>
>>> On 10/17/06, Bob Shannon <bshannon at tiac.net> wrote:
>>>> Ok, I'm stumped here!
>>>>
>>>> How do I make a bootable system disk under HDOS?
>>>>
>>>> I'm able to init and pass media check on a 'blank' floppy.
>>>>
>>>> But when I SYSGEN/M, and attempt to boot the resulting
>>>> diskette, nothing happens.
>>>>
>>>
>>> At this point try pressing the space bar 3-4 times, it's to determine
>>> baud rate, there is set commands to not require it, I'm not sure if
>>> SYSGEN/M is some how reseting that option, but it's worth a try. I had
>>> seen this with some of the disks I had (HDOS distribution disks). I
>>> thought the disks had gone bad - I then attempted to mount them, and
>>> they worked fine... then I remember about the space bar and that fixed
>>> the problem.
>>> Mark
>>>
>>>> Specifically, I reset, press B for 'boot', the drive light goes on
>>>> then off again, then nothing happens.  No additional text is
>>>> displayed, no drive access sounds, nothing.
>>>>
>>>> When I try SYSGEN *.* I get a read error on the source
>>>> disk and end up back at the HDOS prompt.  The resulting
>>>> disk does not boot, it acts exactly like the SYSGEN/M
>>>> attempt.
>>>>
>>>> When I simply try SYSGEN, I end up with an error where
>>>> the system is looking for ONBECOPY.ABS, which does
>>>> not appear to be on my one and only bootable diskette.
>>>>
>>>> Would someone here please tell me exactly how I'm supposed
>>>> to make a backup boot disk?
>>>>
>>>> -- 
>>>> Delivered by the SEBHC Mailing List
>>>>
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>>>
>>
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>>
>
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