David Banks
4b3ed52454
Z80: Ignore wait during internal machine cycles
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Change-Id: I2fdeebe9706a868e9757089f1aed544e702146d8
2021-07-04 19:03:52 +01:00
David Banks
4ecd60065e
Z80: Revert T80a wrapper to previous version
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Change-Id: I856a39c51305e99c3d8b32efe5be1f8ed8b2583f
2021-06-30 19:45:39 +01:00
David Banks
e65951cfbb
Z80: Daves's fixes to T80 for ICE-Z80
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Change-Id: Id1530b7c3f433ff2ff2b6f7966e3c93657058761
2021-06-30 19:45:39 +01:00
David Banks
670328574b
Z80: T80: whitespace
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Change-Id: If8617f1a93dd9bb0fc1ff94b2d72924f6db34483
2021-06-30 19:45:39 +01:00
David Banks
8e83d6e21f
Z80: Update T80 core to latest from Mister on 30/6/2021
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Change-Id: I6c007617ab03796dcd864c0f84d5663e0f4bece9
2021-06-30 19:45:39 +01:00
David Banks
dc2db74cc3
Z80: Sample IM2 vector at start of T3, not middle
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Change-Id: I902d5993e35da092b8b702fc21b3fbcbef4cc8c3
2021-03-21 17:43:51 +00:00
David Banks
06270af767
Z80: Fix timing of T80 Int Ack cycles
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Change-Id: Id03770dc349f4a6bceea5875dba3f6c55315b311
2019-11-08 10:39:12 +00:00
David Banks
c8f997863e
Z80: Fix timing of T80 IO cycles
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Change-Id: I769dcb01b95008b62455c86151252fdbd6d0aab5
2019-11-08 09:54:07 +00:00
David Banks
d23ebe6913
Z80: push tristating up to Z80CpuMon
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Change-Id: I6fd3e0a170f908d47a7cf0a7f82ab4f74ed980d9
2019-11-01 18:31:31 +00:00
David Banks
768863fb85
Z80: show halted state when single stepping
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Change-Id: Iefe132a98f6b476d9ab7252f0ce551bf0435b3cd
2019-10-30 17:31:49 +00:00
David Banks
c6bc245b3d
Z80: indicate NMI and INT cycles when single stepping
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Change-Id: Iafef4059bd136dd9f3aebf2b03ab5ac186e035a6
2019-10-29 15:48:43 +00:00
David Banks
e76bdc6da2
Z80: Stop T80 in T3 not T2 (work in progress)
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Change-Id: I19fa754cc09a068b628116b9636a995c162ad964
2019-10-27 14:52:42 +00:00
David Banks
89cd34c7db
T80: comments only
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Change-Id: Id680066f04c3ede403eea87b6c433c6c913f09a8
2019-10-25 17:07:27 +01:00
David Banks
ddaa266c12
z80: fix a T80 build error on Spartan 3
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Change-Id: I6fca1eea44e1cc8e244d3d892ee25e0b7fea9eac
2019-10-15 16:28:55 +01:00
David Banks
f710f7a20f
z80: updated T80 to version 350
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Copyright (c) 2018 Sorgelig
Taken from https://github.com/EisernSchild/t80/commit/cbaa6450b
Changes I needed to make afterwards:
1. Fixup T80_Pack.vhd (missing params)
2. Replace T80a.vhd with my own version
Change-Id: I275153ffbddb0d9d5b2d8b1fdc2109468cafb256
2019-10-15 15:47:55 +01:00
David Banks
975ba22848
z80: temporarily disable IORQ_inhibit
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The fixed unreliable IM2 interrupts on the Acorn Z80 Co Pro
Change-Id: Icd7e55a8a92391bd81218e9646bd243992677ce8
2019-10-15 11:48:32 +01:00
David Banks
6291faa4bd
Updated to 0249 of the Z80 core by TobiFlex to fix issues with Spectrum Keyboard
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Change-Id: I2d92c541cdb7feaad84bd3d37ec125594b6b47a8
2016-08-22 14:46:41 +01:00
David Banks
0c0fde6a32
Working Z80 memory access and disassembler in the small GODIL, incremented version to 0.44
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Change-Id: I718be7476ec330743c206e737389856fc4b41fc8
2015-06-28 19:42:25 +01:00
David Banks
e4e0f864df
Switched to Timing-Driven Packing, fixed a bug with instr wait states that meant single stepping executed RST 38 because FF was read off databus; increased comparators to 8; incremented version to 0.43. Works with 100pF capgit add -u!
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Change-Id: Ie6c8c8fc610599516eb1baf957d001079713e462
2015-06-27 18:40:12 +01:00
David Banks
9a68d96233
Initial checking of Z80 work; slight refactor of BusMonCore; version updated to 0.41
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Change-Id: I95f574abb93e84ffb5ca44c45b4c9aa8304e2e58
2015-06-27 11:07:58 +01:00
