Adrian Conlon
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4d09da1541
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Reuse standard 6809/6850 chip/bus wiring
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-10-20 22:54:10 +01:00 |
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Adrian Conlon
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1b2ddd8843
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Don't expose the bus via the CPU any more: if a component needs the bus, it should be prepared to hold a reference to it.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-10-20 20:52:41 +01:00 |
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Adrian Conlon
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9b0cc4542f
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Tidy MC6809 test board/device access.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-10-20 16:57:32 +01:00 |
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Adrian Conlon
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769c65394b
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The extra _getch isn't required as I fix the MC6809 CPU emulation.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-10-14 20:38:07 +01:00 |
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Adrian Conlon
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f58e3ded83
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Use corrected MC6850 in MC6809 test board. Working a little better now.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-30 23:10:03 +01:00 |
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Adrian Conlon
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8ea7bf5d68
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Refactoring on the MC6850 and associated test board code.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-29 14:31:50 +01:00 |
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Adrian Conlon
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de5a9963e0
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More MC6850 updates
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-29 10:06:02 +01:00 |
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Adrian Conlon
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861fc28bba
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Wire up the MC6850 events to the board
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-25 23:57:20 +01:00 |
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Adrian Conlon
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9ab075d0f6
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Incorporate the concepts of transmission and receipt into the events for the MC6850 (TBC)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-24 08:29:11 +01:00 |
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Adrian Conlon
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d77c2a1e9d
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Add more of the MC6850 internals.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-23 20:31:55 +01:00 |
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Adrian Conlon
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b3faa0bb2e
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Wire the MC6850 chip into the MC6809 test code.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-23 13:14:10 +01:00 |
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Adrian Conlon
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6bb8118c7f
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Add miscellaneous documentation and test gubbins
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-21 00:17:25 +01:00 |
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Adrian Conlon
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9e91d2adad
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Plug the 8K hole in the address space of the Grant Searle SBC with 0xff (held high)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-16 19:49:52 +01:00 |
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Adrian Conlon
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7d840f1a42
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Modifying the manner in which memory is mapped, allows a fairly clean mechanism for loading Intel "hex" files.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-09-15 14:35:59 +01:00 |
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Adrian Conlon
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8e0c1ebcde
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Modify the 6809 disassembler a little to give output more like xroar (for comparison purposes)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-30 01:37:09 +01:00 |
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Adrian Conlon
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a5e51f7140
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Simplify the 6809 disassembler usage a little.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-27 10:43:12 +01:00 |
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Adrian Conlon
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974d5fbd14
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Only show disassembled output, when there is actually something to show (fixes 6809 startup/interrupt sequence)
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-27 10:25:15 +01:00 |
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Adrian Conlon
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983e2a5eb2
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Start fleshing out the 6809 disassembler.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-27 01:19:22 +01:00 |
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Adrian Conlon
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e88cbc269b
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Add a skeletal half way house between a 6809 tester and a CoCo 2 emulator.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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2018-08-26 19:09:34 +01:00 |
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