If these were to be put into 27C322: 88.4MiB/4MiB = 23 EPROMs
No FPGA/CPU required PERIOD!
I am suggesting the quickest path to a physical multi. Having the ~14 game M92 ROM set on EEPROMs is not viable.
Its not, this would be preformed with large capacity TSOPs or other modern storage medium.
Well 5V SRAM to be specific, in 8-bit width, stuff that Digikey has in stock.
I was going to bring in the PCB control signals to the multi PCB through 244 buffers, while bootstrapping the SRAM with data, I would have the buffers in high impedance output until I was done loading the SRAM with content. Similar with the data lines to each SRAM, use a 244 buffer between the single FPGA data bus and each SRAM and just program them one by one, then keep the 244 in high impedance while the PCB is actually running. Pry some steps around resetting the main CPU to get the board in a running state would be needed as well....
How do you assert bus control to program the 5 separate buses in circuit?
Image fight, tonma .... Mr heli and pound 4 pound are 50% done so together count as 1Which are the last three that need porting? Image Fight, Tonma, Mr Heli?
Well, the hardware comes first always.... Ports always take longer and should always be expected as a bonus, but in this case it's pointless without the full setSeems like it would be worth assembling in beta status with the already ported games