Code

3 convert to chips#4

Code

Merged

tocksin merged 14 commits intomaintocksin/gtxl:mainfrom 3-convert-to-chipstocksin/gtxl:3-convert-to-chipsCopy head branch name to clipboardJan 11, 2025

+46,960-317

Commits

Commits on Dec 20, 2024

• Change interrupt polarity to eliminate gates

  

  Justin Davis

  committed
  d5b9e4f

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Commits on Dec 23, 2024

• Replace timer buffer with chip

  

  Justin Davis

  committed
  8ab256c

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Commits on Dec 27, 2024

• switch interrupt to J/K FF to remove logic gates. swap data bus access modes (mem/AC) to match gigatron

  

  Justin Davis

  committed
  39e786a

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Commits on Dec 30, 2024

• push control for memory enable into control block

  tocksin

  committed
  af44318

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• Add PCB files

  tocksin

  committed
  ab8e96e

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• Add keyboard and audio blocks

  

  Justin Davis

  committed
  c401420

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Commits on Dec 31, 2024

• Reorganize some control assignments. improve formatting.

  

  Justin Davis

  committed
  cc2cf08

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Commits on Jan 3, 2025

• Add immediate value memory access mode. Make all address modes the same as original gigatron. Change assembly worksheet to match and update test code.

  

  Justin Davis

  committed
  31d1144

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• Add design notes for reference

  

  Justin Davis

  committed
  b937393

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Commits on Jan 8, 2025

• Remove timer registers. Change X register to be the new timer.

  

  Justin Davis

  committed
  bae1b87

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• Remove interrupt enable register. Change lower MAU byte to tristates instead of MUXes.

  

  Justin Davis

  committed
  0fe3275

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• remove xBus. Change assembly to conform with the new architecture.

  

  Justin Davis

  committed
  493d3e7

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Commits on Jan 10, 2025

• Add assembler ruleset for instruction set

  

  Justin Davis

  committed
  e633f16

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• Change ram write signal to ensure no overrun. Remove stale signals.

  

  Justin Davis

  committed
  e388ea8

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