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
|
42947488e9
|
Cleaned up new UI, refactored Debugger/control logic, fixed mouse capture behavior and started working on better keyboard input.
|
2015-12-14 17:47:12 -08:00 |
|
Josh Dersch
|
115432516f
|
Refactored drive logic (mostly) to allow for multiple drives. Fixed drive selection logic. Started work on "real" UI.
|
2015-12-11 16:57:02 -08:00 |
|
Josh Dersch
|
2ee3d64f6c
|
Commiting misc. changes and notes.
|
2015-12-03 10:51:48 -08:00 |
|
Josh Dersch
|
2c2ea68a63
|
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.
|
2015-12-02 12:39:10 -08:00 |
|
Josh Dersch
|
f256042cf4
|
Small tweaks, draft of annotated XMesa microcode assembly added.
|
2015-11-24 17:27:06 -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
|
ca638f1d6e
|
Initial rough implementation of Display hardware and associated tasks. Not really working.
|
2015-11-10 17:04:05 -08:00 |
|
Josh Dersch
|
e1c90dbe01
|
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.
|
2015-11-09 17:36:26 -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
|
0358db09fe
|
Adding readme.
|
2015-11-04 17:02:14 -08:00 |
|
Josh Dersch
|
a689b7185a
|
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.
|
2015-11-04 16:49:42 -08:00 |
|
Josh Dersch
|
39f077bf7a
|
A few fixes to DNS<- behavior and some tweaks to the disk controller. Boot code is progressing further.
|
2015-11-03 16:21:12 -08:00 |
|
Josh Dersch
|
c0f23685b1
|
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.
|
2015-10-29 17:02:22 -07:00 |
|
Josh Dersch
|
2918ede7ce
|
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.
|
2015-10-28 14:11:04 -07:00 |
|
Josh Dersch
|
1dfd1e0be9
|
Hooked disk emulation up to disk images (currently hardcoded). Fixed a small bug in IDISP, tiny stub of Nova disassembler added.
|
2015-10-26 17:46:43 -07:00 |
|
Josh Dersch
|
3b29addb98
|
Disk sector reads now work correctly, and checksums are correctly calculated. Still feeding dummy sector data.
|
2015-10-23 16:07:07 -07:00 |
|
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
|
c4f8fe951f
|
Finished ucode annotations.
|
2015-08-31 15:58:46 -07:00 |
|
Josh Dersch
|
59d98d1909
|
Refinement to CPU, implemented very rough diassembler and began annotation of official Xerox ucode sources with PROM addresses.
|
2015-08-28 18:07:59 -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 |
|
Josh Dersch
|
5719ec4815
|
Adding files that VS mysteriously excluded. I love tools.
|
2015-08-20 09:55:26 -07:00 |
|
Josh Dersch
|
3b77ba875d
|
Sketching in the rest of the CPU
|
2015-08-19 16:50:40 -07:00 |
|
Josh Dersch
|
6193189b10
|
Basic skeleton, ucode loading.
|
2015-08-19 13:35:56 -07:00 |
|
Josh Dersch
|
a9cbef544f
|
Initial commit to add default .gitIgnore and .gitAttribute files.
|
2015-08-14 18:31:37 -07:00 |
|