Josh Dersch
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ae0896b362
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Minor performance improvements. General cleanup. Fixed major (but subtle) issue with memory state machine (BravoX now works!). Updated readme and installer for 1.1 release.
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2016-10-17 14:32:22 -07:00 |
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Josh Dersch
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39277a17a2
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Small performance tweaks, minor cleanup, minor improvement to microcode disassembly. Fixes to microcode annotation (thanks, Ken!).
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2016-09-28 15:46:54 -07:00 |
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Josh Dersch
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7704bca35d
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Cleanup of ugly Shifter code, a few tweaks to task-switch logic (now only calls OnTaskSwitch if a switch actually occurred), and moved back to .NET framework 4.5.2 (from 4.6) which works better on Mono.
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2016-09-06 12:48:33 -07:00 |
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Seth Morabito
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bdc3b0f0e8
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Simplify mode switching logic
Collapses several switch statements and removes duplicate assignments.
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2016-08-19 14:22:59 -07:00 |
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Josh Dersch
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c5e06d46a0
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Updated license to GNU AGPL, updated readme and EULA accordingly.
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2016-07-26 18:06:35 -07:00 |
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JoshD
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5a17e7cfac
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Added GPL license header to source code; updated readme; removed disk images from installer package. Removed pcap folder from project
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2016-07-12 17:18:54 -07:00 |
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Josh Dersch
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46d625586f
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Initial pass at implementing Alto Music (Organ/DAC interfaces). Not currently functional. Fixed Nova diassembly to properly handle alto-specific instructions; fixed some annoyances with microcode disassembler.
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2016-05-12 18:31:22 -07:00 |
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Josh Dersch
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6429c3ae7a
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General code cleanup. Fixed debugger display of RAM banks for 3K systems, cleaned up logic for displaying ucode memory. Implemented memory timing for Alto I systems, incorporated Alto I uCode ROMs from Al K, which now boot. ST-74 runs better now.
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2016-05-05 18:56:29 -07:00 |
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Josh Dersch
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a62ac823ed
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Initial implementation of Alto I support. Still need proper Constants ROM for Alto I. Changed IDISP to use ACSOURCE ROM (small perf increase).
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2016-04-13 15:45:33 -07:00 |
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Josh Dersch
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a9428a91d8
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Small optimizations, updates to installer, and new UI for FPS and disk activity.
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2016-04-05 15:22:30 -07:00 |
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Josh Dersch
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97e72f7989
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Fixup for "1.0" release.
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2016-03-25 15:52:23 -07:00 |
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Josh Dersch
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c4565f81a5
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Fixed drive select logic (multiple drives now work properly -- fingers crossed) and some minor cleanup and dead-code removal.
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2016-03-24 17:31:21 -07:00 |
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Josh Dersch
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2c99250ded
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Small tweaks to display controller in low-res mode; added support for Diablo 44 disks, added ST-76 on Diablo 44.
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2016-03-16 17:07:57 -07:00 |
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Josh Dersch
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dc0a85aed8
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Readme updates, installer updates. A couple of smallish (10%) performance enhancements.
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2016-03-14 16:50:41 -07:00 |
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Josh Dersch
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a79fd5f016
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Implemented basic installer for Contralto. Fixed a couple of small display rendering issues.
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2016-03-11 11:38:35 -08:00 |
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Josh Dersch
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4cbb74c033
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Fixed two microcode bugs related to task switching behavior. Dance, StarWars and *SMALLTALK* work!
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2016-03-09 16:05:45 -08:00 |
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Josh Dersch
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b6e43080f2
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Added (temporary) code to debug floating point issue with Dance,Starwars.
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2016-03-08 17:23:32 -08:00 |
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Josh Dersch
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41b6a76b2a
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Implemented the 3K control RAM configuration, fixed bug in SWMODE (should use modified NEXT, not the NEXT from the uinstruction to determine bank.)
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2016-03-03 16:28:05 -08:00 |
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Josh Dersch
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c73fb66dee
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Added configuration UI. Implemented ethernet encapsulation over UDP. A few minor tweaks.
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2016-02-26 17:46:50 -08:00 |
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Josh Dersch
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8463ef19d0
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Ethernet! A really hacky version of Ethernet. Can play MazeWar, but still needs work.
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2016-01-15 14:44:24 -08:00 |
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Josh Dersch
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898abdc906
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Minor fixes for debugger interface and disassembler; started hooking Ethernet interface up to real host Ethernet (because MazeWar.)
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2016-01-12 17:29:42 -08:00 |
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Josh Dersch
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30ed445764
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Fix for soft-reset emulator uPC and device reset; CopyDisk now executes correctly.
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2016-01-11 16:16:05 -08:00 |
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Josh Dersch
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8361f287e3
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Added Parity Task (for completeness' sake), fixed SWMODE bank switching logic for 2K ROM, minor tweaks.
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2016-01-07 10:34:10 -08:00 |
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Josh Dersch
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0cce77c842
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Fixed S register addressing (many things now working!), tweaked display (mouse displays correctly in lowres mode). Added support for committing disk changes back to disk images (done automatically when switching disks or exiting). Repaired BravoX image.
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2015-12-22 15:45:56 -08:00 |
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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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f256042cf4
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Small tweaks, draft of annotated XMesa microcode assembly added.
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2015-11-24 17:27:06 -08:00 |
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Josh Dersch
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b13944c81c
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Implemented proper video timing, basic mouse support and fixed microcode RAM loading. MARTEST now passes with flying colors; more things are running. Suspect disk timing for other failures.
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2015-11-19 17:41:16 -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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03661fc90b
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Fixed display microcode and display controller. Alto display now generated 100% by microcode tasks. A few small optimizations.
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2015-11-16 16:46:24 -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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47a2ee4b2b
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Implemented temporary "fake" display controller which renders Alto DCBs to the screen, bypassing the display microcode. Alto is booting! Rough keyboard implementation.
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2015-11-11 16:34:44 -08:00 |
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Josh Dersch
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ca638f1d6e
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Initial rough implementation of Display hardware and associated tasks. Not really working.
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2015-11-10 17:04:05 -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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78e61389c1
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Fixed remaining disk issues; KSTAT bits 4-7 must always be "1," and head select change must reload current sector. Boot now loads in complete boot program and control is transferred to it.
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2015-11-05 13:49:32 -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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3b29addb98
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Disk sector reads now work correctly, and checksums are correctly calculated. Still feeding dummy sector data.
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2015-10-23 16:07:07 -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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Josh Dersch
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24d7a5a8fe
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Work begun on Disk controller, stubs for keyboard and a few bugfixes and tweaks.
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2015-09-04 18:03:47 -07:00 |
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Josh Dersch
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0ced1a2ef8
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Built basic debugger UI and execution framework; a few bugfixes. CPU now executes uCode up until the first STARTF (unimplemented).
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2015-09-01 17:06:57 -07:00 |
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Josh Dersch
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59d98d1909
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Refinement to CPU, implemented very rough diassembler and began annotation of official Xerox ucode sources with PROM addresses.
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2015-08-28 18:07:59 -07:00 |
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Josh Dersch
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9c3ee3afac
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Tweaks to ALU, CPU, Memory
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2015-08-21 17:12:28 -07:00 |
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Josh Dersch
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f1ffcb0547
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Implemented ALU, most of Memory state machine.
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2015-08-20 18:02:01 -07:00 |
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