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++ trunk/HISTORY (local)
$Id: HISTORY,v 1.1421 2006/11/06 05:32:37 debug Exp $
20060816 Adding a framework for emulated/virtual timers (src/timer.c),
using only setitimer().
Rewriting the mc146818 to use the new timer framework.
20060817 Adding a call to gettimeofday() every now and then (once every
second, at the moment) to resynch the timer if it drifts.
Beginning to convert the ISA timer interrupt mechanism (8253
and 8259) to use the new timer framework.
Removing the -I command line option.
20060819 Adding the -I command line option again, with new semantics.
Working on Footbridge timer interrupts; NetBSD/NetWinder and
NetBSD/CATS now run at correct speed, but unfortunately with
HUGE delays during bootup.
20060821 Some minor m68k updates. Adding the first instruction: nop. :)
Minor Alpha emulation updates.
20060822 Adding a FreeBSD development specific YAMON environment
variable ("khz") (as suggested by Bruce M. Simpson).
Moving YAMON environment variable initialization from
machine_evbmips.c into promemul/yamon.c, and adding some more
variables.
Continuing on the LCA PCI bus controller (for Alpha machines).
20060823 Continuing on the timer stuff: experimenting with MIPS count/
compare interrupts connected to the timer framework.
20060825 Adding bogus SCSI commands 0x51 (SCSICDROM_READ_DISCINFO) and
0x52 (SCSICDROM_READ_TRACKINFO) to the SCSI emulation layer,
to allow NetBSD/pmax 4.0_BETA to be installed from CDROM.
Minor updates to the LCA PCI controller.
20060827 Implementing a CHIP8 cpu mode, and a corresponding CHIP8
machine, for fun. Disassembly support for all instructions,
and most of the common instructions have been implemented: mvi,
mov_imm, add_imm, jmp, rand, cls, sprite, skeq_imm, jsr,
skne_imm, bcd, rts, ldr, str, mov, or, and, xor, add, sub,
font, ssound, sdelay, gdelay, bogus skup/skpr, skeq, skne.
20060828 Beginning to convert the CHIP8 cpu in the CHIP8 machine to a
(more correct) RCA 180x cpu. (Disassembly for all 1802
instructions has been implemented, but no execution yet, and
no 1805 extended instructions.)
20060829 Minor Alpha emulation updates.
20060830 Beginning to experiment a little with PCI IDE for SGI O2.
Fixing the cursor key mappings for MobilePro 770 emulation.
Fixing the LK201 warning caused by recent NetBSD/pmax.
The MIPS R41xx standby, suspend, and hibernate instructions now
behave like the RM52xx/MIPS32/MIPS64 wait instruction.
Fixing dev_wdc so it calculates correct (64-bit) offsets before
giving them to diskimage_access().
20060831 Continuing on Alpha emulation (OSF1 PALcode).
20060901 Minor Alpha updates; beginning on virtual memory pagetables.
Removed the limit for max nr of devices (in preparation for
allowing devices' base addresses to be changed during runtime).
Adding a hack for MIPS [d]mfc0 select 0 (except the count
register), so that the coproc register is simply copied.
The MIPS suspend instruction now exits the emulator, instead
of being treated as a wait instruction (this causes NetBSD/
hpcmips to get correct 'halt' behavior).
The VR41xx RTC now returns correct time.
Connecting the VR41xx timer to the timer framework (fixed at
128 Hz, for now).
Continuing on SPARC emulation, adding more instructions:
restore, ba_xcc, ble. The rectangle drawing demo works :)
Removing the last traces of the old ENABLE_CACHE_EMULATION
MIPS stuff (not usable with dyntrans anyway).
20060902 Splitting up src/net.c into several smaller files in its own
subdirectory (src/net/).
20060903 Cleanup of the files in src/net/, to make them less ugly.
20060904 Continuing on the 'settings' subsystem.
Minor progress on the SPARC emulation mode.
20060905 Cleanup of various things, and connecting the settings
infrastructure to various subsystems (emul, machine, cpu, etc).
Changing the lk201 mouse update routine to not rely on any
emulated hardware framebuffer cursor coordinates, but instead
always do (semi-usable) relative movements.
20060906 Continuing on the lk201 mouse stuff. Mouse behaviour with
multiple framebuffers (which was working in Ultrix) is now
semi-broken (but it still works, in a way).
Moving the documentation about networking into its own file
(networking.html), and refreshing it a bit. Adding an example
of how to use ethernet frame direct-access (udp_snoop).
20060907 Continuing on the settings infrastructure.
20060908 Minor updates to SH emulation: for 32-bit emulation: delay
slots and the 'jsr @Rn' instruction. I'm putting 64-bit SH5 on
ice, for now.
20060909-10 Implementing some more 32-bit SH instructions. Removing the
64-bit mode completely. Enough has now been implemented to run
the rectangle drawing demo. :-)
20060912 Adding more SH instructions.
20060916 Continuing on SH emulation (some more instructions: div0u,
div1, rotcl/rotcr, more mov instructions, dt, braf, sets, sett,
tst_imm, dmuls.l, subc, ldc_rm_vbr, movt, clrt, clrs, clrmac).
Continuing on the settings subsystem (beginning on reading/
writing settings, removing bugs, and connecting more cpus to
the framework).
20060919 More work on SH emulation; adding an ldc banked instruction,
and attaching a 640x480 framebuffer to the Dreamcast machine
mode (NetBSD/dreamcast prints the NetBSD copyright banner :-),
and then panics).
20060920 Continuing on the settings subsystem.
20060921 Fixing the Footbridge timer stuff so that NetBSD/cats and
NetBSD/netwinder boot up without the delays.
20060922 Temporarily hardcoding MIPS timer interrupt to 100 Hz. With
'wait' support disabled, NetBSD/malta and Linux/malta run at
correct speed.
20060923 Connecting dev_gt to the timer framework, so that NetBSD/cobalt
runs at correct speed.
Moving SH4-specific memory mapped registers into its own
device (dev_sh4.c).
Running with -N now prints "idling" instead of bogus nr of
instrs/second (which isn't valid anyway) while idling.
20060924 Algor emulation should now run at correct speed.
Adding disassembly support for some MIPS64 revision 2
instructions: ext, dext, dextm, dextu.
20060926 The timer framework now works also when the MIPS wait
instruction is used.
20060928 Re-implementing checks for coprocessor availability for MIPS
cop0 instructions. (Thanks to Carl van Schaik for noticing the
lack of cop0 availability checks.)
20060929 Implementing an instruction combination hack which treats
NetBSD/pmax' idle loop as a wait-like instruction.
20060930 The ENTRYHI_R_MASK was missing in (at least) memory_mips_v2p.c,
causing TLB lookups to sometimes succeed when they should have
failed. (A big thank you to Juli Mallett for noticing the
problem.)
Adding disassembly support for more MIPS64 revision 2 opcodes
(seb, seh, wsbh, jalr.hb, jr.hb, synci, ins, dins, dinsu,
dinsm, dsbh, dshd, ror, dror, rorv, drorv, dror32). Also
implementing seb, seh, dsbh, dshd, and wsbh.
Implementing an instruction combination hack for Linux/pmax'
idle loop, similar to the NetBSD/pmax case.
20061001 Changing the NetBSD/sgimips install instructions to extract
files from an iso image, instead of downloading them via ftp.
20061002 More-than-31-bit userland addresses in memory_mips_v2p.c were
not actually working; applying a fix from Carl van Schaik to
enable them to work + making some other updates (adding kuseg
support).
Fixing hpcmips (vr41xx) timer initialization.
Experimenting with O(n)->O(1) reduction in the MIPS TLB lookup
loop. Seems to work both for R3000 and non-R3000.
20061003 Continuing a little on SH emulation (adding more control
registers; mini-cleanup of memory_sh.c).
20061004 Beginning on a dev_rtc, a clock/timer device for the test
machines; also adding a demo, and some documentation.
Fixing a bug in SH "mov.w @(disp,pc),Rn" (the result wasn't
sign-extended), and adding the addc and ldtlb instructions.
20061005 Contining on SH emulation: virtual to physical address
translation, and a skeleton exception mechanism.
20061006 Adding more SH instructions (various loads and stores, rte,
negc, muls.w, various privileged register-move instructions).
20061007 More SH instructions: various move instructions, trapa, div0s,
float, fdiv, ftrc.
Continuing on dev_rtc; removing the rtc demo.
20061008 Adding a dummy Dreamcast PROM module. (Homebrew Dreamcast
programs using KOS libs need this.)
Adding more SH instructions: "stc vbr,rn", rotl, rotr, fsca,
fmul, fadd, various floating-point moves, etc. A 256-byte
demo for Dreamcast runs :-)
20061012 Adding the SH "lds Rm,pr" and bsr instructions.
20061013 More SH instructions: "sts fpscr,rn", tas.b, and some more
floating point instructions, cmp/str, and more moves.
Adding a dummy dev_pvr (Dreamcast graphics controller).
20061014 Generalizing the expression evaluator (used in the built-in
debugger) to support parentheses and +-*/%^&|.
20061015 Removing the experimental tlb index hint code in
mips_memory_v2p.c, since it didn't really have any effect.
20061017 Minor SH updates; adding the "sts pr,Rn", fcmp/gt, fneg,
frchg, and some other instructions. Fixing missing sign-
extension in an 8-bit load instruction.
20061019 Adding a simple dev_dreamcast_rtc.
Implementing memory-mapped access to the SH ITLB/UTLB arrays.
20061021 Continuing on various SH and Dreamcast things: sh4 timers,
debug messages for dev_pvr, fixing some virtual address
translation bugs, adding the bsrf instruction.
The NetBSD/dreamcast GENERIC_MD kernel now reaches userland :)
Adding a dummy dev_dreamcast_asic.c (not really useful yet).
Implementing simple support for Store Queues.
Beginning on the PVR Tile Accelerator.
20061022 Generalizing the PVR framebuffer to support off-screen drawing,
multiple bit-depths, etc. (A small speed penalty, but most
likely worth it.)
Adding more SH instructions (mulu.w, fcmp/eq, fsub, fmac,
fschg, and some more); correcting bugs in "fsca" and "float".
20061024 Adding the SH ftrv (matrix * vector) instruction. Marcus
Comstedt's "tatest" example runs :) (wireframe only).
Correcting disassembly for SH floating point instructions that
use the xd* registers.
Adding the SH fsts instruction.
In memory_device_dyntrans_access(), only the currently used
range is now invalidated, and not the entire device range.
20061025 Adding a dummy AVR32 cpu mode skeleton.
20061026 Various Dreamcast updates; beginning on a Maple bus controller.
20061027 Continuing on the Maple bus. A bogus Controller, Keyboard, and
Mouse can now be detected by NetBSD and KOS homebrew programs.
Cleaning up the SH4 Timer Management Unit, and beginning on
SH4 interrupts.
Implementing the Dreamcast SYSASIC.
20061028 Continuing on the SYSASIC.
Adding the SH fsqrt instruction.
memory_sh.c now actually scans the ITLB.
Fixing a bug in dev_sh4.c, related to associative writes into
the memory-mapped UTLB array. NetBSD/dreamcast now reaches
userland stably, and prints the "Terminal type?" message :-]
Implementing enough of the Dreamcast keyboard to make NetBSD
accept it for input.
Enabling SuperH for stable (non-development) builds.
Adding NetBSD/dreamcast to the documentation, although it
doesn't support root-on-nfs yet.
20061029 Changing usleep(1) calls in the debugger to to usleep(10000)
(according to Brian Foley, this makes GXemul run better on
MacOS X).
Making the Maple "Controller" do something (enough to barely
interact with dcircus.elf).
20061030-31 Some progress on the PVR. More test programs start running (but
with strange output).
Various other SH4-related updates.
20061102 Various Dreamcast and SH4 updates; more KOS demos run now.
20061104 Adding a skeleton dev_mb8696x.c (the Dreamcast's LAN adapter).
20061105 Continuing on the MB8696x; NetBSD/dreamcast detects it as mbe0.
Testing for the release.
============== RELEASE 0.4.3 ==============
++ trunk/HISTORY (local) $Id: HISTORY,v 1.982 2005/10/07 22:45:32 debug Exp $ 20050816 Some success in decoding the way the SGI O2 PROM draws graphics during bootup; lines/rectangles and bitmaps work, enough to show the bootlogo etc. :-) Adding more PPC instructions, and (dummy) BAT registers. 20050817 Updating the pckbc to support scancode type 3 keyboards (required in order to interact with the SGI O2 PROM). Adding more PPC instructions. 20050818 Adding more ARM instructions; general register forms. Importing armreg.h from NetBSD (ARM cpu ids). Adding a (dummy) CATS machine mode (using SA110 as the default CPU). Continuing on general dyntrans related stuff. 20050819 Register forms for ARM load/stores. Gaah! The Compaq C Compiler bug is triggered for ARM loads as well, not just PPC :-( Adding full support for ARM PC-relative load/stores, and load/ stores where the PC register is the destination register. Adding support for ARM a.out binaries. 20050820 Continuing to add more ARM instructions, and correcting some bugs. Continuing on CATS emulation. More work on the PPC stuff. 20050821 Minor PPC and ARM updates. Adding more machine types. 20050822 All ARM "data processing instructions" are now generated automatically. 20050824 Beginning the work on the ARM system control coprocessor. Adding support for ARM halfword load/stores, and signed loads. 20050825 Fixing an important bug related to the ARM condition codes. OpenBSD/zaurus and NetBSD/netwinder now print some boot messages. :) Adding a dummy SH (Hitachi SuperH) cpu family. Beginning to add some ARM virtual address translation. MIPS bugfixes: unaligned PC now cause an ADEL exception (at least for non-bintrans execution), and ADEL/ADES (not TLBL/TLBS) are used if userland tries to access kernel space. (Thanks to Joshua Wise for making me aware of these bugs.) 20050827 More work on the ARM emulation, and various other updates. 20050828 More ARM updates. Finally taking the time to work on translation invalidation (i.e. invalidating translated code mappings when memory is written to). Hopefully this doesn't break anything. 20050829 Moving CPU related files from src/ to a new subdir, src/cpus/. Moving PROM emulation stuff from src/ to src/promemul/. Better debug instruction trace for ARM loads and stores. 20050830 Various ARM updates (correcting CMP flag calculation, etc). 20050831 PPC instruction updates. (Flag fixes, etc.) 20050901 Various minor PPC and ARM instruction emulation updates. Minor OpenFirmware emulation updates. 20050903 Adding support for adding arbitrary ARM coprocessors (with the i80321 I/O coprocessor as a first test). Various other ARM and PPC updates. 20050904 Adding some SHcompact disassembly routines. 20050907 (Re)adding a dummy HPPA CPU module, and a dummy i960 module. 20050908 Began hacking on some Apple Partition Table support. 20050909 Adding support for loading Mach-O (Darwin PPC) binaries. 20050910 Fixing an ARM bug (Carry flag was incorrectly updated for some data processing instructions); OpenBSD/cats and NetBSD/ netwinder get quite a bit further now. Applying a patch to dev_wdc, and a one-liner to dev_pcic, to make them work better when emulating new versions of OpenBSD. (Thanks to Alexander Yurchenko for the patches.) Also doing some other minor updates to dev_wdc. (Some cleanup, and finally converting to devinit, etc.) 20050912 IRIX doesn't have u_int64_t by default (noticed by Andreas <avr@gnulinux.nl>); configure updated to reflect this. Working on ARM register bank switching, CPSR vs SPSR issues, and beginning the work on interrupt/exception support. 20050913 Various minor ARM updates (speeding up load/store multiple, and fixing a ROR bug in R(); NetBSD/cats now boots as far as OpenBSD/cats). 20050917 Adding a dummy Atmel AVR (8-bit) cpu family skeleton. 20050918 Various minor updates. 20050919 Symbols are now loaded from Mach-O executables. Continuing the work on adding ARM exception support. 20050920 More work on ARM stuff: OpenBSD/cats and NetBSD/cats reach userland! :-) 20050921 Some more progress on ARM interrupt specifics. 20050923 Fixing linesize for VR4121 (patch by Yurchenko). Also fixing linesizes/cachesizes for some other VR4xxx. Adding a dummy Acer Labs M1543 PCI-ISA bridge (for CATS) and a dummy Symphony Labs 83C553 bridge (for Netwinder), usable by dev_footbridge. 20050924 Some PPC progress. 20050925 More PPC progress. 20050926 PPC progress (fixing some bugs etc); Darwin's kernel gets slightly further than before. 20050928 Various updates: footbridge/ISA/pciide stuff, and finally fixing the VGA text scroll-by-changing-the-base-offset bug. 20050930 Adding a dummy S3 ViRGE pci card for CATS emulation, which both NetBSD and OpenBSD detects as VGA. Continuing on Footbridge (timers, ISA interrupt stuff). 20051001 Continuing... there are still bugs, probably interrupt- related. 20051002 More work on the Footbridge (interrupt stuff). 20051003 Various minor updates. (Trying to find the bug(s).) 20051004 Continuing on the ARM stuff. 20051005 More ARM-related fixes. 20051007 FINALLY! Found and fixed 2 ARM bugs: 1 memory related, and the other was because of an error in the ARM manual (load multiple with the S-bit set should _NOT_ load usermode registers, as the manual says, but it should load saved registers, which may or may not happen to be usermode registers). NetBSD/cats and OpenBSD/cats seem to install fine now :-) except for a minor bug at the end of the OpenBSD/cats install. Updating the documentation, preparing for the next release. 20051008 Continuing with release testing and cleanup.
++ trunk/HISTORY (local) $Id: HISTORY,v 1.772 2005/06/04 12:02:16 debug Exp $ 20050428 Disabling the "-fmove-all-movables" option in the configure script, because it causes the compile to fail on OpenBSD/sgi. 20050502 Minor updates. 20050503 Removing the WRT54G mode (it was bogus anyway), and adding a comment about Windows NT for MIPS in doc/experiments.html. Minor updates to the x86 instruction decoding. 20050504 Adding some more x86 instructions. Adding support for reading files from ISO9660 CDROMs (including gzipped files). It's an ugly hack, but it seems to work. Various other minor updates (dev_vga.c, pc_bios.c etc). 20050505 Some more x86-related updates. Beginning (what I hope will be) a major code cleanup phase. "bootris" (an x86 bootsector) runs :-) 20050506 Adding some more x86 instructions. 20050507 tmpnam => mkstemp. Working on a hack to allow VGA charcells to be shown even when not running with X11. Adding more x86 instructions. 20050508 x86 32-bit SIB addressing fix, and more instructions. 20050509 Adding more x86 instructions. 20050510 Minor documentation updates, and other updates (x86 stuff etc.) 20050511 More x86-related updates. 20050513 Various updates, mostly x86-related. (Trying to fix flag calculation, factoring out the ugly shift/rotate code, and some other things.) 20050514 Adding support for loading some old i386 a.out executables. Finally beginning the cleanup of machine/PROM/bios dependant info. Some minor documentation updates. Trying to clean up ARCBIOS stuff a little. 20050515 Trying to make it possible to actually use more than one disk type per machine (floppy, ide, scsi). Trying to clean up the kbd vs PROM console stuff. (For PC and ARC emulation modes, mostly.) Beginning to add an 8259 interrupt controller, and connecting it to the x86 emulation. 20050516 The first x86 interrupts seem to work (keyboard stuff). Adding a 8253/8254 programmable interval timer skeleton. FreeDOS now reaches a command prompt and can be interacted with. 20050517 After some bugfixes, MS-DOS also (sometimes) reaches a command prompt now. Trying to fix the pckbc to work with MS-DOS' keyb.com, but no success yet. 20050518 Adding a simple 32-bit x86 MMU skeleton. 20050519 Some more work on the x86 stuff. (Beginning the work on paging, and various other fixes). 20050520 More updates. Working on dev_vga (4-bit graphics modes), adding 40 columns support to the PC bios emulation. Trying to add support for resizing windows when switching between graphics modes. 20050521 Many more x86-related updates. 20050522 Correcting the initial stack pointer's sign-extension for ARCBIOS emulation (thanks to Alec Voropay for noticing the error). Continuing on the cleanup (ARCBIOS etc). dev_vga updates. 20050523 More x86 updates: trying to add some support for protected mode interrupts (via gate descriptors) and many other fixes. More ARCBIOS cleanup. Adding a device flag which indicates that reads cause no side-effects. (Useful for the "dump" command in the debugger, and other things.) Adding support for directly starting up x86 ELFs, skipping the bootloader stage. (Most ELFs, however, are not suitable for this.) 20050524 Adding simple 32-bit x86 TSS task switching, but no privilege level support yet. More work on dev_vga. A small "Copper bars" demo works. :-) Adding support for Trap Flag (single-step exceptions), at least in real mode, and various other x86-related fixes. 20050525 Adding a new disk image prefix (gH;S;) which can be used to override the default nr of heads and sectors per track. 20050527 Various bug fixes, more work on the x86 mode (stack change on interrupts between different priv.levels), and some minor documentation updates. 20050528 Various fixes (x86 stuff). 20050529 More x86 fixes. An OpenBSD/i386 bootfloppy reaches userland and can be interacted with (although there are problems with key repetition). NetBSD/i386 triggers a serious CISC-related problem: instruction fetches across page boundaries, where the later part isn't actually part of the instruction. 20050530 Various minor updates. (Documentation updates, etc.) 20050531 Adding some experimental code (experiments/new_test_*) which could be useful for dynamic (but not binary) translation in the future. 20050602 Adding a dummy ARM skeleton. Fixing the pckbc key repetition problem (by adding release scancodes for all keypresses). 20050603 Minor updates for the next release. 20050604 Release testing. Minor updates. ============== RELEASE 0.3.3 ============== 20050604 There'll probably be a 0.3.3.1 release soon, with some very very tiny updates.
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