Josh Dersch
f849b795a6
- Fixed two memory state machine issues:
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1) The Orbit microcode occasionally expects to be able to do a double-word read in cycles 6 and 7 instead of the usual 5 and 6.
2) The double-word logic incorrectly handles several species of overlapped read/writes, which Spruce's layout microcode uses.
As a result, Spruce now works, as do the Smalltalk-80 images.
Several tweaks to microcode disassembly (still rough).
Completed Orbit / Dover ROS / Dover Print Engine emulation. Still some rough edges; it works and can create PDF output.
Tweaked Disk Controller's Restore operation, it is now more accurate though wasn't causing any noticable issues.
2017-07-10 16:49:12 -07:00
Josh Dersch
ae0896b362
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.
2016-10-17 14:32:22 -07:00
Josh Dersch
39277a17a2
Small performance tweaks, minor cleanup, minor improvement to microcode disassembly. Fixes to microcode annotation (thanks, Ken!).
2016-09-28 15:46:54 -07:00
Seth Morabito
18be144349
Only add Memory device once
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Moves setting of main memory device from inner loop to outside the loop.
2016-08-19 14:12:08 -07:00
Josh Dersch
c5e06d46a0
Updated license to GNU AGPL, updated readme and EULA accordingly.
2016-07-26 18:06:35 -07:00
JoshD
5a17e7cfac
Added GPL license header to source code; updated readme; removed disk images from installer package. Removed pcap folder from project
2016-07-12 17:18:54 -07:00
Josh Dersch
46d625586f
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.
2016-05-12 18:31:22 -07:00
Josh Dersch
6429c3ae7a
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.
2016-05-05 18:56:29 -07:00
Josh Dersch
a62ac823ed
Initial implementation of Alto I support. Still need proper Constants ROM for Alto I. Changed IDISP to use ACSOURCE ROM (small perf increase).
2016-04-13 15:45:33 -07:00
Josh Dersch
97e72f7989
Fixup for "1.0" release.
2016-03-25 15:52:23 -07:00
Josh Dersch
898abdc906
Minor fixes for debugger interface and disassembler; started hooking Ethernet interface up to real host Ethernet (because MazeWar.)
2016-01-12 17:29:42 -08:00
Josh Dersch
30ed445764
Fix for soft-reset emulator uPC and device reset; CopyDisk now executes correctly.
2016-01-11 16:16:05 -08:00
Josh Dersch
3c8a64bac8
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.
2015-12-17 16:11:03 -08:00
Josh Dersch
b13944c81c
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.
2015-11-19 17:41:16 -08:00
Josh Dersch
cbcfd2b47e
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.
2015-11-17 16:09:50 -08:00
Josh Dersch
03661fc90b
Fixed display microcode and display controller. Alto display now generated 100% by microcode tasks. A few small optimizations.
2015-11-16 16:46:24 -08:00
Josh Dersch
30ecfa6900
Support for CRAM reading/loading, SWMODE support. Rough debugger UI for viewing / disassembling microcode in ROM1, RAM0 banks (ugly). Minor performance improvements.
2015-11-13 16:50:18 -08:00
Josh Dersch
47a2ee4b2b
Implemented temporary "fake" display controller which renders Alto DCBs to the screen, bypassing the display microcode. Alto is booting! Rough keyboard implementation.
2015-11-11 16:34:44 -08:00
Josh Dersch
e9a13529c1
Implemented extended memory and fixed issues with S register 0 (which loads M).
2015-11-05 17:29:41 -08:00
Josh Dersch
78e61389c1
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.
2015-11-05 13:49:32 -08:00
Josh Dersch
ea5a5f22ec
Improvements to Disk Word Task.
2015-10-20 15:32:26 -07:00
Josh Dersch
ee7c7fb035
Implemented more Disk functionality, fixed bug in ACSOURCE dispatch in Emulator task.
2015-09-16 16:27:16 -07:00
Josh Dersch
08d6063def
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.
2015-09-14 11:27:16 -07:00
Josh Dersch
24d7a5a8fe
Work begun on Disk controller, stubs for keyboard and a few bugfixes and tweaks.
2015-09-04 18:03:47 -07:00
Josh Dersch
0ced1a2ef8
Built basic debugger UI and execution framework; a few bugfixes. CPU now executes uCode up until the first STARTF (unimplemented).
2015-09-01 17:06:57 -07:00
Josh Dersch
9c3ee3afac
Tweaks to ALU, CPU, Memory
2015-08-21 17:12:28 -07:00
Josh Dersch
f1ffcb0547
Implemented ALU, most of Memory state machine.
2015-08-20 18:02:01 -07:00
