trag said:

His hack using the .print driver was interesting, but I wonder if he is aware of the ROM hook that Charlie told us about some years ago.  Older fellow who dropped in for a few months or years a while back.

Click to expand...

Henry, not Charlie.  His handle is/was H3NRY.   Here's a tidbit:

"Hi trag, yes you remember right, but why anybody'd want to add ROM code to a 25-year old Mac is beyond me. In the day, we needed to add code to init our SCSI port and support the Micah hard disk in the 64K ROM environment. The need for that went away with the Mac Plus ROMs which had SCSI and HD support built in, as well as support for more than 512K of RAM."

https://68kmla.org/forums/index.php?/topic/10261-video-playback-on-plusclassic/?p=109856

I think he discussed that hook in another posting somewhere.  It may be worth searching his posts.  There probably were not that many of them.