That 6502-based Picocomputer looks very interesting, thanks.
It appears to be using RP2040 as add-ons, via Pico boards in this case, thus -The RP6502-RIA interfaces with the 6502, provides 64K Extended RAM for the 6502, plus this 4-bit wide PIX output bus which goes to RP6502-VGA and other PIX-capable extension modules. The PIX bus also provides a simple data return channel.
The RP6502-RIA can be thought of as the equivalent of an RP1 on a Pi 5 though more modest in nature. For a pure RP2040-based system the RIA would be the main computer, the PIX bus the interface to add-ons - which is what we are after.
Time to take a look at the source code I guess, do some testing - https://github.com/picocomputer/rp6502
It appears to be using RP2040 as add-ons, via Pico boards in this case, thus -
Code:
Actual 6502 hardware RP2040-based add-ons .......................... ........................... : : : : : .-----. 6502 Bus : .-----. PIX .-----. : | RAM |--.-----.------:------| RIA |---.---| VGA | : `-----' | | : `-----' | `-----' : .-----. | .--^---. : | .-----. : | I/O |--' | 6502 | : }---| ? | : `-----' `------' : | `-----' :........................:The RP6502-RIA can be thought of as the equivalent of an RP1 on a Pi 5 though more modest in nature. For a pure RP2040-based system the RIA would be the main computer, the PIX bus the interface to add-ons - which is what we are after.
Time to take a look at the source code I guess, do some testing - https://github.com/picocomputer/rp6502
Statistics: Posted by hippy — Fri Jul 19, 2024 11:46 am