[Coco] More Color Forth

[Stephen Pereira]

Thanks a million, Darren!

Art was trying to tell me the same thing, but I was not understanding what he meant.  I get it, now!  DOH!

Thanks very, very much, both Art and Darren, for helping me break this logjam!

smp
--
Stephen M. Pereira
Bedford, NH  03110
KB1SXE


> On Jan 25, 2015, at 3:46 PM, Darren A <mechacoco at gmail.com> wrote:
> 
> On Sun, Jan 25, 2015 at 12:01 PM, Stephen Pereira wrote:
> 
>> 
>> What I am concerned about is whether or not I am getting the addresses
>> onto the stack in the right order, and with the correct byte order.
>> 
>> The reason I’m asking is that this code “kind of works” in my Color
>> Forth.  I do get a file onto disk called SCRN1TO8.BIN, but it is 21 blocks
>> long, instead of 4 blocks, like I expected.
>> 
>> Finally, while my Drivewire UI shows the disk activity start and end, my
>> code does not return to the command line in Color Forth, so I am also
>> concerned about that.  I see in the “Disk Basic Unravelled” that the SAVEM
>> command dose end with an RTS, so I did expect my code to return.
>> 
> 
> 
> I think the problem is that you do a JSR to $CF7E instead of JMP.  The JSR
> pushes a return address onto the stack in front of your address
> parameters.  The SAVEM code doesn't expect that to be there. A return
> address could be manually pushed prior to the parameters and then you can
> JMP to $CF7E and have it return.
> 
> - Darren
> 
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