[sebhc] HDOS sysgen questions (and problems)

Glenn Roberts gfroberts at adelphia.net
Thu Oct 19 17:03:26 CDT 2006


heathkit/hdos8bit

Francisco Rabazas wrote:
> 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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