[71B, FRAM71] Using a USB GPIB interface to load files on a 71B

[Dave Frederickson]

(05-16-2015 11:09 PM)cruff Wrote:  Note to those uploading images, be sure to target a FRAM area that has been configured in the middle of system RAM, so as to avoid either clobbering COPYIL at the low end of memory and the stacks and buffers at the high end of memory.

When copying ROM images into FRAM71, the preferred technique is to FREEPORT a module, determine it's address using MEMBUF, then POKE the ROM data into the IRAM. This avoids clobbering main memory. Finally, the IRAM is reconfigured to ROM.

Note that the easiest way to load ROM images is from an HP-IL mass storage device, like ILPer, using ROMCOPY. HC ROM's, however, will still need to be POKE'd.

Dave