when 128k is not enough

[longpole001]

thanks for that ,
i been trolling the microchip site and this has been asked before using c , with various results , 2 threads i read eventualy gave it up.

16bit mode would be the only option to consider , and i have a raised a ticket with microchip to pin down timing on the 16bit option for the bus , but the timing you mention seems likely ( microchip also give an example - in C of setup for the addressing , but it was not of much help

but the underline factor is the speed drop of the cpu the 25mhz- or even say 32mhz to allow for the extended memory bus and that not really an option for this project. 64Mhz it works well and i really cant drop it back now , just running out of code space


so again its looks like either is porting the code/ learning new compiler / c probablyor Microbasic maybe but i dont hear good things so far / new hardware chips / probalby go ARM

OR

having 2 cpus / split off some of the hardware / then develop and complete interface for the cpus with interupt handing / some varable transfering / sub routines indexing interface so the one cpu can call each others routines and what at this point looks like a lot of duplicated code in both cpus and work

but it seems is the only way forward with PBP .

the code has taken most of this year to write / test , and even though porting would be alot easier than starting again , i really dont want to , it would take another 3-4 months to learn new script language and then port everything

EMB option looks so good an option over the above options if PBP can be made to use it well , but droping the cpu speed down to use the EMB is not really an option ,


this really sucks some days

cheers

Sheldon