Roger, I know this is not what you want to hear, but right now I cannot get 
back to the IDE board code. I’m stuck with some heavy lifting hardware (80486 
board). 
With help from the two Dave’s and Ian we are doing a V3 IDE board that 
hopefully will be the last board in that series – improving on some high speed 
CPU issues.

 

When  final board is done, at that time I will go back to the software for the 
board I wrote now some years ago.  It definitely needs some upgrades.  None the 
least of which is cleaning up the sector holes problem and the wait routine.   
Hopefully I could get an easier beginner install approach going.  

 

What I don’t quite understand is that others (myself included),  do not have 
the sector problem you have.  Could somebody out there confirm the MYIDE 
program on the bottom of this web page  
http://s100computers.com/My%20System%20Pages/IDE%20Board/My%20IDE%20Card.htm 
works for them.  

 

John

 

 

From: [email protected] [mailto:[email protected]] 
Sent: Wednesday, February 11, 2015 9:28 AM
To: [email protected]
Subject: Re: [N8VEM-S100:6291] An updated (V3) version of our Dual IDE/CF card 
S100 bus board

 

Hi John,

 

>> Roger what you have below has all the hallmarks of the MYIDE sector 
>> reading/writing being different to that of 
>> your CPM BIOS.  I had that, way back.  Do you have a floppy in your system. 
>> If so boot CPM from that and era 
>> A:*.*   Then PIP things across. A text file first. See that you can first 
>> read it from your floppy based CPM.  Then 
>> see if you can do so with MYIDE.

Of course, I'd be the first to admit that the code could be buggy, BUT .... the 
bad behavior extends to MYIDE as well.  The MYIDE code I'm using is what I 
downloaded from the Web site, except I had to change the port addresses, and I 
made the mods. to the wait-for routines that Rich (I think it was him?) 
suggested.  I've described what happens before, but basically the content of 
the sectors is offset by one, i.e. I see the content of sector 2 when I try to 
read LBA 0 (sector 1).  I think that I also had trouble with "writing" a 
sector, only to find that the sector contents didn't change.

 

>> Yes I will add “A” & “B” on the Silkscreen. Good suggestion.

Thanks.

Roger

 

 

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