Idle curiousity, does anyone happen to know whether the TMS4100 ROM
was a standard off-the-shelf character generator from TI, or was it a
generic mask-ROM-to-customer-order, or otherwise have data on it such
as it's native size.
Full id:
TMS4100
ZA 5705
T-04163
7308 <-- date code
It's the character generator in the HP9830, arranged for character
column scanning order rather than row scanning (7-bits columns at the
outputs rather than 5-bit rows).
I see three possibilities:
- the TI TMS4100 is a character generator ROM
- it's a TI TMS 4100 mask ROM, programmed and sold by TI as a
character gen
- it's a TI TMS 4100 mask ROM, programmed to order for HP
I've sorted out the pinout, so it's not a dire need, just curious.