Prototyping Blog page 5
Pictures of the Prop/128 and a short video
this is the ROM addressing switching - for Lynx mode the silver switch chooses a 24k cap on the ROM and allows thru rws to ram in the 24 - 32 k boundary. The red DIL switch chooses between 8/16/32/64k ROM size for BANK 0. The bank switch will have a similar arrangment to choose bank address and bit selection into the memory split. This should allow a dual 4896 operation as well as providing for future expansion by routing video accesses to the external expansion bus.
VIDEO OF THE PROPELLER/LYNX 128 BOOT
...As usual, any comments welcome ....