[FRAM71] Pre-Production Batch

[rprosperi]

(12-13-2014 11:01 PM)Dave Frederickson Wrote:  Once you've copied an image to IRAM in FRAM71 you can reconfigure the IRAM to be ROM. This better mimics the real hardware, but is there any reason to do this? Perhaps some tidbit of code checks to see if the module is indeed a ROM?

Reconfiguring the IRAMs to ROM will protect the port contents from errant code romping thru memory. For example when playing with Forth (or even some unknown LEX files) I've trashed the contents of IRAM ports, but the "ROM" ports are preserved as-is. Basically this really just saves the time needed to ROMCOPY the port's content back to what it was, but it takes a lot less time to just POKE the revised FRAM config string to make them ROM one time, than rebuilding the IRAMs each time it gets destroyed.