Hello Tas,
Well it's looking promising. Firmware version 2.3MT (MT = MaxText) has passed the first real word operational test.
I manually created a 'new format' single frame 625 mono PROM, including 3 text pages, and installed it into one of the spare production units. Then updated that unit to the latest firmware. On hooking it up to a TV the Test Card image was generated fine, and all 3 text pages could be selected...so looking good
I now need to create an 8 field / 4 PROM PAL colour set, including 12 text pages (3 per PROM) and test that to ensure that the subcarrier phasing is maintained throughout all the addressing manouvres. Should be fine, I think
Then I need to re-write the PROM creation app so it builds PROM images in the new format.
When I've got it sorted I'll give you a shout and we can upgrade your unit. It now seems a little futile to have asked you to select four pages from the available catalogue, when now you can have all of them!