 Thomas Harte
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92467b02da
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Change 6821 interrupt clearing condition: must read data register.
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2026-05-13 17:41:01 -04:00 |
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Thomas Harte
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779b370796
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Make 6847 just-in-time; wire through IRQs.
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2026-05-06 17:31:03 -04:00 |
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Thomas Harte
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940708bd07
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Support floating bus going either way.
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2026-04-16 21:52:10 -04:00 |
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Thomas Harte
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363072078b
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Add TODO, remove TODO.
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2026-04-12 09:26:03 -04:00 |
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Thomas Harte
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05a85b6ba9
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Resolve various compiler warnings: primarily ~'s promotion to int.
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2026-03-25 13:57:32 -04:00 |
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Thomas Harte
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fa136b89fa
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Do enough of C2 output to catch the tape motor.
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2026-03-23 16:23:34 -04:00 |
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Thomas Harte
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66af2c00a8
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Add TODO.
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2026-03-22 23:06:19 -04:00 |
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Thomas Harte
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1be89a3dd5
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Fix 6821 read decoding; keyboard is now being scanned.
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2026-03-22 19:48:56 -04:00 |
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Thomas Harte
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2a1d9bc8e4
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Try: storage is in control register, but is not writeable.
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2026-03-20 16:41:03 -04:00 |
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Thomas Harte
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3913a2c9d3
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Switch comprehension of what combines to make IRQA and B.
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2026-03-20 14:45:56 -04:00 |
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Thomas Harte
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e098a5d08d
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Attempt wiring of interrupts.
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2026-03-20 13:24:05 -04:00 |
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Thomas Harte
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d2d635a735
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Provide that some control lines might sometimes be outputs.
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2026-03-20 12:58:16 -04:00 |
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Thomas Harte
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aa5692e844
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Communicate interrupts to the PIA.
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2026-03-20 12:54:54 -04:00 |
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Thomas Harte
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f5e6c35060
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Establish that interrupts might happen.
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2026-03-20 10:40:36 -04:00 |
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Thomas Harte
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49412da7db
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Establish a two-stage setup.
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2026-03-20 10:32:19 -04:00 |
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Thomas Harte
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bffbf8184a
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Confirm MO5 address wiring; add hysteresis.
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2026-03-20 10:25:04 -04:00 |
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Thomas Harte
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64648a0388
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Attempt a through-wiring of PIA ports.
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2026-03-20 10:17:09 -04:00 |
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Thomas Harte
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e77bc4790c
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Sketch out some basics of the PIA.
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2026-03-19 21:31:09 -04:00 |
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Thomas Harte
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dcd6b611d0
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Start establishing more MO5 hardware.
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2026-03-19 18:24:10 -04:00 |
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