> Amazing work on the linkups. Wingwar and Virtual Formula look great. > > I had a go at using shared memory and two instances of Mame running on the same PC to > get two virtual GPRider pcbs hooked up together a while back. It uses a dual port > sram chip between two System X boards to handle the comms. > > Unfortunately my PC wasn't fast enough and the emulations lost sync quickly. > > You might like to try it on your system. > > The shared memory is at 0x2f0000-0x2f3fff. All I did was add a memory handler that > mapped the memory to shared memory (look in the SMGP init for how to add that > handler, its in the same place). > > If I recall correctly, GPRider only actually used 32 bytes. (but it has been a while) > > Good luck!
That System X setup looks familiar The "direct comm" variant looks the same as the one they later used on System32 (F1 Exhaust Note, Air Rescue)
I have yet to figure out some way to do the shared ram "correctly" (currently I use file i/o with FULL shared access, which only works on the local machine).
But hey... That SMGP Comm Board... I guess that MB89372P-SH will be fun too.
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Help emulating the model1 comm board
