Let's Play "Mac Plus Mystery Port" — #23

Post #23 by Bunsen

Source Forum	68kMLA
Category	Hardware
Post Date	Thu, 10 Jun 2010 - 15:05
Original URL	https://68kmla.org/bb/threads/lets-play-quot-mac-plus-mystery-port-quot.11698/

Post

If I lay my hands on one, I'll try to make sure you get a chance to poke at it.

it is entirely possible that the FPGA code was loaded by the computer / in which case the FPGA code would be a component of the Lapis Driver. /

The computer boots up, the FPGA is blank, after the Lapis driver loads, the Lapis driver causes teh FPGA data to be driven on the bus to the Lapis card where it is addressed to the FPGA. After programming the FPGA the Lapis card begins functioning

Intriguing - a possible method for new FPGA-based expansion devices which saves a little board space and component expense?

How does one avoid collisions with CPU activity while flashing the FPGA? (On the PDS bus)