Josh Dersch
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3c8a64bac8
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Ethernet implemented, fixed a bug in "mixed" double word stores (store followed by fetch rather than two stores). Fixed a few UI issues, fixed Reset behavior.
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2015-12-17 16:11:03 -08:00 |
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Josh Dersch
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2c2ea68a63
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Implemented disk writes (roughly). Bravo now works. DIEX passes with writes enabled. Begun investigation into drive selection logic. Added Mesa source code with annotation, is displayed in ROM1 tab.
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2015-12-02 12:39:10 -08:00 |
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Josh Dersch
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cbcfd2b47e
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Minor bugfixes, introduced a new timing infrastructure and moved DiskController over to it. Minor performance improvements; now running at 110% speed. Display timing is still too slow.
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2015-11-17 16:09:50 -08:00 |
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Josh Dersch
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30ecfa6900
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Support for CRAM reading/loading, SWMODE support. Rough debugger UI for viewing / disassembling microcode in ROM1, RAM0 banks (ugly). Minor performance improvements.
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2015-11-13 16:50:18 -08:00 |
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Josh Dersch
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e1c90dbe01
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Fixed bug in carry flag on SUB operations; SUBLZ X,X now works correctly. Alto now appears to boot successfully. Skeleton of Display hardware added.
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2015-11-09 17:36:26 -08:00 |
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Josh Dersch
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e9a13529c1
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Implemented extended memory and fixed issues with S register 0 (which loads M).
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2015-11-05 17:29:41 -08:00 |
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Josh Dersch
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a689b7185a
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Fixed: Disk address (KADR) and Disk Data (KDATA) registers behave (more) correctly; in particular record commands hare processed properly and KDATA handles reads/writes more sanely. Fixed checksum calculation; due to above changes microcode now correctly validates checksums and boot progresses to read in an entire track's worth of data before dying with a "check failure" error.
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2015-11-04 16:49:42 -08:00 |
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Josh Dersch
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39f077bf7a
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A few fixes to DNS<- behavior and some tweaks to the disk controller. Boot code is progressing further.
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2015-11-03 16:21:12 -08:00 |
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Josh Dersch
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c0f23685b1
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Fixed instruction register decoding SFs for Emulator Task; first stab at handling (most) DNS<- operations including setting SKIP and CARRY flip flops. BLT now succeeds, Nova code in bootstrap is running.
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2015-10-29 17:02:22 -07:00 |
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Josh Dersch
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2918ede7ce
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Some fixes to emulator task dispatch functions, added Nova disassembler, nova instruction single-step and nova instruction breakpoint support. Penciled in DNS (Nova Shift) support in emulator task. Added skeleton for Logging.
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2015-10-28 14:11:04 -07:00 |
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Josh Dersch
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1dfd1e0be9
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Hooked disk emulation up to disk images (currently hardcoded). Fixed a small bug in IDISP, tiny stub of Nova disassembler added.
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2015-10-26 17:46:43 -07:00 |
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Josh Dersch
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ea5a5f22ec
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Improvements to Disk Word Task.
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2015-10-20 15:32:26 -07:00 |
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Josh Dersch
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ee7c7fb035
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Implemented more Disk functionality, fixed bug in ACSOURCE dispatch in Emulator task.
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2015-09-16 16:27:16 -07:00 |
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Josh Dersch
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08d6063def
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Refactored Task code into separate files for readability; added breakpoint support and basic Memory window to debugger. Initial implementation (mostly stubs) of Disk hardware and Tasks.
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2015-09-14 11:27:16 -07:00 |
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