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ULA fixes, SDRAM working and sound precise.... Xmas Edition
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@rampa069 rampa069 released this 23 Dec 11:13
· 152 commits to master since this release
V1.1
f9c8239

Trying to implement an Oric-1 and Oric Atmos in a modern FPGA.

Background:

There was one version made by Gehstock in github , but it is far from be functional as an oric. It only has 32k (no oric existed with that memory, only 16K ,48K and 64K so there were errors managing HIRES mode) and no way to load tapes.

What is Working

At the moment the full original machine is working (except tape recording).

  • ULA.
  • VIA 6522.
  • CPU 6502.
  • Tape loading working (via audio cable on the RX pin).
  • Full 48K of RAM.
  • Keyboard.
  • Sound (AY-3-8910).
  • ROM 1.1a (in the ATMOS version).
  • ROM 1.0 (in the ORIC 1 version).

TODO

  • OSD load roms,tapes and disks from SD CARD.
  • Disk controller.
  • Tape recording.

KNOWN BUGS

  • None at the moment....

The TEAM

  • Ron Rodritty: Team coordination and QA testing.
  • Fernando Mosquera: FPGA guru.
  • Subcritical: Verilog and VHDL.
  • ManuFerHi: Hardware consulting.
  • Chema Enguita: Oric gurú
  • SliceBit: Oric hardware Gurú
  • Ramón Martínez: Oric hardware, Some software, and fpga coding.
  • Slingshot: SDRAM work.
Assets 4
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