FFE7 to FFEF is still free....
Just to be clear, the ROM starts at F800, or 2K total.
I ended up putting two trigger outputs on the generator. One is a programmable pre-trigger that will drive the high speed camera, the other is at the time the transient is fired. Both are just 5V 50 ohm outputs. I'll make a separate circuit for the camera.
trigger1: two additional BNCs for the pre-trigger and trigger
trigger2: added pre-trigger to display, shown at 200ms
trigger3: trigger outputs. bottom trace rising edge is the pre-trigger. 200ms to trigger rising edge (top trace)
Joined a camera forum and asked about the Sony's remote. May have to modify the camera to make this work.
Hope to have the Sony remote and a few other parts next week and I can start playing with it.
01506 * INVALID INTERRUPT REQUIESTED
01507 *
01508 A ffe6 3b INVALID_IRQ RTI
M6801 Portable Cross Assembler 0.05 Page 31
Sat Jan 16 20:16:13 2016
Options - MD,MC,NOG,NOU,W,NOMEX,CL,FMT,O
LINE S PC OPCO OPERANDS S LABEL MNEMO OPERANDS COMMENT
01509 *
01510 * INTERRUPT VECTORS
01511 *
01512 A fff0 ORG IRQ_VEC FFF0 - ROM
01513 A fff0 ffe6 A FDB INVALID_IRQ SCI