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2022-03-20Run ~*EIGHT GODDAMN PDP-8s IN PARALLEL*~Julian Blake Kongslie3-48/+127
It looks like we could probably fit 16 on the current FPGA, just about. (doesn't meet timing at 50MHz, should in theory work at 40MHz)
2022-03-20Cleanup of PDP-8 core to support arbitrated memory protocol.Julian Blake Kongslie1-190/+109
No support yet for multiple words per line; otherwise complete.
2022-03-20Support loading RIMs and multi-word lines via the UART loader.Julian Blake Kongslie2-12/+24
2022-03-20Add a few useful memory images.Julian Blake Kongslie5-4141/+0
2022-03-20Temporary change to PDP-8 internal memory to match controller protocolJulian Blake Kongslie1-57/+86
2022-03-18Clean up p8bin2uart and support dumping multiple words per line.Julian Blake Kongslie1-27/+73
2022-03-18Redraw the diagram in PLAN to make it a little prettier.Julian Blake Kongslie1-23/+46
2022-03-18Minor paranoia about ensuring that we're in the correct half_stateJulian Blake Kongslie1-0/+1
coming out of t_rwr delay between memory transactions
2022-03-18Ignore colons on inputs; use them to separate words in output.Julian Blake Kongslie2-7/+19
2022-03-18Trivial change to make it a little easier to understand the mem arbiter.Julian Blake Kongslie1-1/+1
2022-03-13Add a few notes.Julian Blake Kongslie1-0/+12
2022-03-13Import p8bin2* tools into repo.Julian Blake Kongslie2-0/+334
2022-03-13Change command parser to support bulk download script.Julian Blake Kongslie2-23/+118
2022-03-13Add memory arbiter and broadcast in between command UART and DRAM.Julian Blake Kongslie3-17/+203
2022-03-13Fix DRAM timings to avoid back-to-back transactions.Julian Blake Kongslie1-3/+11
2022-03-13Change FIFO size for UARTs to 1024 bytes in each direction.Julian Blake Kongslie2-4/+4
2022-03-13Print a newline after memory read result prints.Julian Blake Kongslie1-26/+32
2022-03-13Adding packed keyword to structs and tweaking tag_t slightly.Julian Blake Kongslie1-7/+7
2022-03-13Reformat PLAN to be a little prettier.Julian Blake Kongslie1-17/+24
2022-03-01Switch back to focal69 instead of broken hello.pal.Julian Blake Kongslie1-2/+1
2022-02-28Don't use the bottom data bit as the ready signal :-DJulian Blake Kongslie1-1/+1
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