[#2] Emulated ROM HW - Githubissues

sumberg / kex_japan_2018

Comparison of methods for controlling legacy hardware from a modern micro-controller

GNU General Public License v3.0

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[#2] Emulated ROM HW #8

Closed sumberg closed 6 years ago

sumberg commented 6 years ago

Parent issue: #2

Design circuit for communication between the Arduino and the RP2A03 using emulated ROM, with latches.

What components are needed?
How should the communication flow be designed? What talks to what? What's the optimal way?
Drawbacks?
[x] Research
[x] Draft circuit
[x] Implement draft
[x] Testing (according to criteria)

sumberg commented 6 years ago

See the Components wiki page. We have compiled the researched information we need so far. We still need to research the ATMega328 a bit more in order to determine what programming we'll need to do, and what registers needs to be set.

sumberg commented 6 years ago

Circuit draft is implemented, and we're able to execute STA (0x85) instruction on the RP2A03 through the Atmega328. LEDs confirm that the PC counts up as intended.