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1992-07-26
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Sinclair ZX Spectrum Emulator V1.41 - 27/7/92 - by G.A. Lunter
Additions to the Spectrum Emulator, starting with 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 Z80 emulator.
30/7/91 Version 1.20 released
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
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 ordened.
- 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)
- Inofficial 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.
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 analog IBM joystick and a special interface for
digital (Spectrum) joysticks are supported. In the
documentationfile 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.)
- Functionkeys 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.
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.
<*** End of New.Doc ***>