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1996-11-10
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Sinclair ZX Spectrum Emulator 'Z80' v3.05 - 11/11/96 - by G.A. Lunter
Additions to the Spectrum Emulator, from the the first version that
was released, version 1.20. (*) = only available to registered users.
Names between brackets are games that first indicated the presence of
the corresponding bug in the emulator, or the person that spotted the bug.
11/11/96 Version 3.05 released
- Disciple/+D Centronics printer bug fixed.
- Disciple COPY SCREEN$ bug fixed.
- RLD and RRD could change ROM (Soldier of Light; James McKay
and Lee Tonks aka Blood told me about this)
- RES/SET IX/IY could change ROM (Red Scorpion; bug reported
by Robert Zmyslowicz)
- Z80 again works on all processors, including 8088/8086.
- ALT-F7 shortcut to playing .TAP files works more
intuitively, following suggestions by Einar Gattoni Saukas.
- Added switches -tx and -tp, to suppress tape info window
and to pause after each block respectively. These setting
can be changed at runtime. (Suggestion by Blood)
- Extended switch -d (double interrupt frequency) to allow
both higher and lower interrupt frequencies than 50 Hz.
(Suggested by Cristian Secara)
- Added switch -0sND to select physical drives for MGT drives
(Suggested by Einar Gattoni Saukas)
- Switch -ti now looks for .TAP file in both current and
default .TAP file directory. (Einar Gattoni Saukas)
- Function keys now work when tape info window pops up.
(Einar Gattoni Saukas)
- The combination LD SP,#FFFF/RET and ../RST cc caused a
General Protection Violation. (Robert Zmyslowicz)
- Bugfix: long OTIR to #FE in Hi Res Color mode crashed Z80
(Confuzion; Bernhard Lutz)
- Bugfix in OUT #FE routine when sound was turned off; caused
Z80 to run very slowly sometimes (Cristopher Heys)
- Floating bus emulation improved in HRC mode (Ricochet; Lee
Tonks noticed the problem)
- Bug in filename-selection-by-typing-initials, introduced in
v3.04, fixed. (Bernhard Lutz, Einar Gattoni Saukas)
- Z80 now runs under Windows 95 in DOS boxes. (v3.04 already
did, in fact, but this list didn't say so)
- Bugfix: Z80 sometimes 'compressed' 16K blocks into more
than 16K, and refused to load the resulting file. Z80 file
format has been changed. (Robert Zmyslowicz, Erik Kunze)
- Bugfix: IN to page Multiface rom/ram in or out corrupted A
register (Genie 128; James McKay and Blood)
(*) - Bugfix: Z80 didn't swallow read-only VOC files, and TAP2VOC
produced those for no reason. (Einar Gattoni Saukas)
(*) - Out2Voc of v3.04 registered distribution didn't work,
because wrong memory model was chosen. (Wojtek Wasilewski)
(*) - Bugfix: playing a .VOC file and then loading a .TAP file
caused Z80 to crash. (Wojtek Wasilewski)
(*) - Bugfix: loading a +D .Z80 snapshot with no PLUSDROM.BIN
file present now causes Z80 to select Disciple mode
automatically, instead of printing error message and quit.
(Robert Zmyslowicz)
- Bugfix: Level numbers were sometimes incorrectly appended
when forming name of .DAT file. (Robert Zmyslowicz)
- Bugfix: When two snapshots of the same name existed, the
.SNA one was loaded, and never the poor .Z80 one. (Blood)
- The AMX mouse was called AMS mouse everywhere. (Erik Kunze)
- Some errors in the tech doc fixed. (Einar Gattoni Saukas)
- Added list of Disciple/+D system variables to Z80.DOC.
10/8/96 Version 3.04 released
- Supports .SLT 'Super Loader Trap' files with level data and
loading screens. Added utility ADDDAT.
- Much better keyboard handling and speed measuring in DOS
boxes running under Windows (95)
(*) - Added utility READSB to read .VOC sample files from
SoundBlaster compat. sound card, and digitally filter them.
This finally enables reliable loading via a SoundBlaster.
(*) - Bugfix: Disciple snapshots don't overwrite old data anymore
- Needs 16K less memory: fast/full/minimal (default,-xt,-xu):
564K, 517K, 481K; uses 240K less base memory if Extended
Memory is present. No support anymore for Extended
Hercules and Plantronics video modes.
(*) - Switch -00 added, to suppress pause at intro screen
- Z80 now ejects paper from laserprinters when ZX Printing.
(switch -0f N)
- Added tech info about ZX Printer, AY-3-8912 sound chip, and
Spectrum 128 internals. (Info on AY chip due to Alastair
Booker and Ian Collier.)
(*) - VOC files are high-pass filtered when played back, to make
loading less sensitive to 50 Hz component.
- Support for 2nd analogue joystick as Sinclair 1 joystick
added.
- The emulator returns 'No ZX Printer attached' if the output
printer is not there or off-line; previously the emulator
hang on a COPY with no printer to print to. Switch -xj
added. (Lords of Midnight, SuperSpy)
- Added -xy trace feature
- Added -0m opcode mapping feature, for use with (a future
version of) Leslie Styles' disassembler DSNA
- Switch -kx added, for custom remapping of keyboard.
- Addresses are entered as decimal numbers by default now;
hex can be used by prefixing the address with a # or $
sign.
- Added explanation of Break Points in documentation (section
2.21) (Douglas Paulley)
- Novell broadcasts are disabled (Damion Yates)
- Timer routine made faster.
(*) - Bugfix: Disciple/+D track buffer bug fixed.
- Bugfix: SoundBlaster is properly turned off at exit
- Bugfix: RES/SET opcodes can't change ROM anymore (Catch23
and Batman, the Capped Crusade; thanks to Gerardo Oporto
Jorrin)
- Bugfix: CTRL-ENTER when loading snapshot now also keeps
part of hardware mode fixed.
- Opcode for loading levels is ED FB, not ED F6 as the
documentation said previously. (Russell Marks)
- Bugfix: Loading snapshot saved in +D hardware mode with no
PLUSDROM.BIN file present does not return Z80 to DOS
anymore.
- Bugfix: settings are read correctly from snapshot file
specified on command line.
- Bugfix: '128 I/O ports are decoded properly (Three Weeks in
Paradise 128; Tomaz Kac)
29/12/94 Version 3.03 released
(*) - OUT2VOC now also handles 128k soundchip output.
(*) - TAP2VOC can now produce raw sample files.
- Bugfix: Mouse and analogue joystick work together and
properly. (Niccolo Rigacci)
- Improved Hi Resolution Color emulation; the emulator uses
different timings in 128K modes, and locks in on memory
pushes to synchronise. Most programs that use HRC effects
work correctly now.
- Bugfix: Without EMS memory, Multiface 128 did not work.
- Small error fixed and explanation added in DOC about new
.Z80 file headers (Arnt Gulbrandsen).
- Added: Switch to turn off Hi Resolution Color emulation
completely; this saves another 40K over -xt.
- Added: Program counter tracing feature.
- Added: Information in documentation on Spectrum 128 video
timings, and interrupt timings.
- In 128 mode, out address 7FFD is decoded using only A15
(and low order byte), making at least one problem program
run. (Igor 'Iggy' Eged)
3/11/94 Version 3.02 released
- Bugfix: Without EMS memory, a Spectrum error with IF1 on
locked the emulator or generated an 'IN 0 crash'.
(*) - Bugfix: OUT2VOC did not work properly for long samples.
28/10/94 Version 3.01 released
- Bugfix: The ZX Printer code for Epson printer was faulty.
- The phone number for B.G. Services in Z80.DOC was wrong.
- The emulator can now log Z80 OUTs to any I/O port in a .OUT
file, with timing information.
(*) - Added utility (OUT2VOC) to translate .OUT log files into
.VOC sound sample files, for recording music and SAVEing
directly to a .VOC file.
- Added a new section to the documentation about the Disciple
and +D interfaces.
- Added section about the OUT2VOC utility.
20/10/94 Version 3.00 released
(*) - Disciple and Plus D disk interface emulation
- ZX Printer support, for Epson and HP Laserjet compatibles
- Emulation of hi-resolution color and border effects, using
exact timing.
- Multiface 128 emulation; useful to load M128 snaps without
corrupting the screen
- Mouse support, controlling either Spectrum joysticks or the
AMX Mouse interface (supported by e.g. Art Studio)
- A number of improvements and bugfixes of the Z80 processor
emulation code, solving several problems with turbo
loaders, most notably Ocean's.
- All instructions emulated, including unofficial DDCB and
FDCB ones, and all unofficial ED instructions. Most
unofficial flags emulated.
- User defined joystick support
(*) - VOC file support - read programs stored in sound sample files
(*) - Emulator can read in real mode from SoundBlaster port
- Faster code using 386+ instructions for VGA mode
- Switch to remove info window when saving or loading
- Emulator can set breakpoints at any address, invisible to
the running program.
- Can save any part of Spectrum memory to disk, and load it
back in memory.
(*) - Utility to read a sound sample from the standard LPT tape
interface, or the SoundBlaster, in a .VOC file
(*) - Utility to convert .TAP files to .VOC files
- One-key joystick mode change, with ALT F4.
- Improved emulation of 'floating bus' (try Arkanoid)
(*) - Bugfix Z802TAP; sometimes blocks got corrupted.
- Bugfix: Digital Zandbergen joystick didn't work.
- Multi-level support, in the same way as implemented in XZX
version 0.5.2
- Bugfix: MOVE from cartridge to another cartridge didn't
work, due to buffering problems. (Martin Smith)
- Bugfix: Several problems with the keyboard when running
under Windows are solved.
- Bugfix: R register doesn't change when going to main menu.
- Better sound quality, and no border interference anymore in
Real Mode when playing music.
20/5/93 Version 2.01a released (registered users only)
(*) - Fixed bugs in DISCiPLE disk read utility, and added option
to copy all files at once.
- Fixed typing error in Z80.EXE
- Fixed small errors in Z80FAQ.DOC
3/5/93 Version 2.01 released.
- Added LaTeX and PostScript doc, by Lars K\"oller,
- Added Windows icon
- Added -xb switch (black and white VGA)
- Added remark about Czech registration to doc
- Added various other things to doc
- Fixed bug in (X-)Hercules border dithering
16/4/93 Version 2.00 released.
- Z80 now supports the Spectrum 128, including '128 sound
through PC speaker or AdLib compatible sound card,
- Dutch documentation rewritten in English,
- Much better tape support, with tape files on disk, support
of headerless files and more difficult formats, easy access
to programs using LOAD "name", multiple files in a single
tape file, automatic mirroring of loaded blocks to tape
files,
- Microdrive support, 8 microdrives with cartridge-files
holding up to 126K of data, low-level I/O compatibility,
- VGA support, fast screen update and accurate colours
including bright,
- Z80 emulation nearly perfect, including emulation of
unofficial flags and undocumented features. Timing of
individual instructions is made much more accurate on fast
computers, while maintaining maximum possible speed on slow
ones,
- Spectrum keyboard layout help-screen under ALT-F1,
(*) - Disciple/+D disk read utility can translate 48K and 128K
snapshots to .Z80 files, and screen snapshots and normal
files to .TAP files. It will now also read 5.25'' (720K
80 track double density) disks, and some bugs have been
fixed,
- Z80 now reads a .INI file at startup for default settings,
- Changing the hardware (SamRam, Spectrum 128) now possible
on-the-fly,
- The R register and LDIR emulation flags are saved in .Z80
snapshots,
(*) - The emulation speed slowdown is now accurate from 8 MHz PC's
to the fastest available 486 machines. The emulation speed
can be brought back to 7%,
(*) - Source files now include source of SamRam software,
- Support of AZERTY keyboards,
- The emulator can now run under Windows,
- Emulator can use other default 16K rom (switch -xr),
- The program uses EMS if available, for fast bank switching,
(*) - CONVERT utility can now also convert a screen to a .PCX file,
(*) - CONVZ80 now also supports the .PRG and tape files of SpecEm
(Kevin J. Phair) and tape files of ZX (Rindt and Brukner),
(*) - New utility: Z802TAP, to convert a .Z80 snapshot to a .TAP
tap file,
(*) - New utility: TAP2TAPE, to write a .TAP file back to tape,
- Fixed CGA colours bug,
- Fixed CTRL-BREAK bug,
- Fixed several other bugs, and
- a nice new intro screen.
14/8/92 Version 1.45 released.
- Z80 emulator is now about 5% faster. Arnt Gulbrandsen,
the author of JPP, pointed out to me that I was clearing
the BL register too often.
- The analogue joystick now really works
(*) - SAVEing programs to tape now really works (if you're a
registered user)
- You can now load .SNA files (commonly used snapshot format)
directly into the emulator, without having to convert them
with ConvZ80.
- The Interface-I RS232 channel can now also be attached to
COM3 and COM4.
(*) - ConvZ80 now also supports the .SP format used by a Spectrum
emulator called 'SPECTRUM', written by Pedro Gimeno.
- A capacitor in DIAGRAMS.Z80 had the wrong value (17-8-92)
- .SNA files that were loaded were not properly closed,
resulting in a FILE NOT FOUND error. (17-8-92)
27/7/92 Version 1.41 released. The 1.40 version of Z80.EXE was
packed with COMPACK (sort of PKLITE), which was bugged:
it didn't run on some '386s and '486s. This version isn't
packed anymore.
16/7/92 Version 1.40 released, Shareware and for registered
users.
(*) - Full tape support! A program DIAGRAMS.Z80 is supplied,
that consists of two diagrams of tape-adapters for PC's,
and a test-program useful for calibration of the
adapters.
(*) - A utility to read DISCiPLE floppies.
- The analogue IBM joystick and a special interface for
digital (Spectrum) joysticks are supported. In the
documentation file is a diagram for the digital joystick
interface.
- A more extensive manual, and a summary for English-
speaking users.
- Speed measurement of the Z80 emulator is more accurate.
(V1.20 overestimated the speed.)
- Function keys F1-F7 and F10 are now used.
- The Emulator can run in 'Real'-mode, for better sound
and for tape (speed-)load and save.
- R register emulation is now perfect, so that protected
games (e.g. lenslock games) can be loaded.
- Video routines are faster.
- Several bugfixes concerning writes in ROM. (Strong Man)
- The settings of Issue 2 emulation, Double Interrupt
frequency, Video synchronisation mode and joystick are
stored in .Z80 files.
6/11/91 Version 1.30, for registered users only:
- It is now much easier to choose a file from the main
menu: the cursor keys, PgUp and PgDn can be used to
browse through the list of files, and letter-keys make
the bar jump to the first file that starts with that
letter. The files are now alphabetically ordered.
- Sinclair joystick 1 added (keys 1-5)
- If a path is entered at the command line, the Emulator
automatically jumps to the main menu, option 'load
program', and changes to the specified directory.
- If a file is attached to the RS232 in- or output
channel, the read- or write-position is shown (main
menu, options I and O)
- Switches -yl and -yh are added, for Low and High video
synchronisation. With these switches, the flickering of
sprites of some games can be reduced. (Ghost 'n Goblins,
Uridium)
- Bugfix: DOS-clock ran too fast in version 1.25
- Bugfix: On AT's the Emulator crashed if Spectrum programs
used interrupt mode 2 while the I register was 255.
(Full Throttle)
- Unofficial flags are now emulated better. (Ghost'n Goblins)
(*) - Extra utility CONVZ80, converts .Z80 files in .SP and
.SNA files, the snapshot formats of the Spanish Spectrum
emulator VGASPEC and the Norwegian Spectrum emulator JPP
respectively, and vice versa.
(*) - Utility Z80DUMP; displays the header of .Z80 files.
4/10/91 Version 1.25, for registered users only:
- Bugfix of instructions CB30 to CB37 (Bounder)
- 50 Hz interrupt and video update run 180 degrees out of
phase (BC Quest for Tires)
- SLA, SRA, SRL sped up.
(*) - Switch -z added: the Emulator now can be slowed down to
about a factor 4.
- Bugfix sound: some computers only produced sound after a
OUT 31,13.
- Switch -2 added for Issue-2 emulation (Spinads)
- Bugfix GETRS: now reading from COM2 works, and an
on-screen counter shows the progress.
(*) - CONVERT extended: GIF-files can be made directly from
.Z80 files
30/7/91 Version 1.20 released. Eerste, geheel Nederlandse versie.
11/11/88 First line of code written