[Coco] Can anyone verify an error in the NitrOS9 tech manual?

[Dave Philipsen]

Yes, it appears to be a boo-boo on Microware's part from way back.  Most all other system calls use A, X, Y.  But's it's definitely too late to change anything now.

Dave

> On May 20, 2017, at 10:48 AM, Gene Heskett <gheskett at shentel.net> wrote:
> 
>> On Saturday 20 May 2017 08:50:13 Dave Philipsen wrote:
>> 
>> Well, I am using assembler and I can tell you that when I use the 'Y'
>> register to reference the LSB of the file pointer my program does not
>> work but when I use the 'U' register it works correctly.
>> 
>> Dave
>> 
> Well, we have the source, so I would look at the F$Seek calls code. It 
> may be that it uses Y internally in a way thats faster than stacking u, 
> loading u, doing the call, and pulling u back off the stack. If thats 
> not the case, maybe it could be fixed, but the time to fix it was in 
> 1982 as that would probably break a couple thousand apps we already 
> have.  And THAT would definitely be a bad dog, no biscuit situation.
> 
>>> On 5/20/2017 7:20 AM, Bill Pierce via Coco wrote:
>>> Dave, what you would have to do is check the nitros9 source for the
>>> fseek function and see what is actually being used. I always use
>>> seek in C so I haave no idea which regs it's using :-)
> 
> 
> Cheers, Gene Heskett
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