From Simon Owen:
This archive contains many versions of the SAM Coupé 32K ROM image, released with kind permission from the ROM author, Dr Andy Wright.
Thanks to Search: “Simon N Goodwin” for supplying the files, which include two dumped from pre-production hardware (and which only work with the early hardware!).
Beware - the early ROMs are very buggy, and tend to go mad once BASIC starts paging. ROM 10 (version 1.0) requires the CALL after F9 or BOOT because the ROM loads the bootstrap but fails to execute it. The address depends on the RAM size:
On a 256K SAM:
CALL 229385
Or on a 512K (or larger) machine:
CALL 491529