( German text )
There are various emulators for the TRS-80 (and other models) from Tandy. Unfortunately, little is known about the computers from EACA and TCS that are compatible with Tandy and are manufactured and distributed in Germany. These are only partially supported in the well-known emulators.I use Jens Guenter's emulator SDLTRS for the demonstration. Unfortunately, pictures of the screens of the original systems are much more difficult to take with a digital camera and are not always visually appealing. I also don't have all the systems presented here in my collection, which is why they can only be shown in the emulation. Please read the SDLTRS online documentation. All files are included in sdltrs_und_die_videogenies.7z so that the examples can also be tried out locally. I have tested the calls under Windows 10-64bit, if a 32bit Windows is used, SDL2TRS64.EXE must be replaced with SDL2TRS.EXE in the calls.
And yes, EACA made even the Colour Genie. But this one doesn't belong to the true TRS-80 compatibel systems, but a lot code in the ROM of the Colour Genie comes from the Video Genie. For the Colour Genie there are spezial emulators found on the web. I prefer the "CGENIE - The EG 2000 Colour Genie Emulator" from Jürgen Buchmüller (Pullmoll) running with MSDOS and real floppydrives.
Genie I/II G-DOS NEWDOS H(acktory)-DOS Schmidtke CP/M
Genie III G-DOS2.1 G-DOS2.4 Kaempf CP/M Holte CP/M Lowe CP/M
Genie IIs Kaempf CP/M G. Schroeder CP/M Grafik
Genie IIIs Holte CP/M Kaempf CP/M 2.x Kaempf CP/M 3 G-DOS 2.4 Grafik und RDLBASIC
The Video GenieThe best known is probably the video Genie I - also known as EG 3003. The Video Genie I had a cassette recorder installed, the Video Genie II had a 10-key keyboard instead of the cassette recorder. Information on all EACA / TCS computers can be found here, with the majority of the documentation being in German language. EACA has distributed the Video Genie as a TRS-80 compatible Computer Genie I/II in Europe. Other names were chosen in other countries.In Australia and New Zealand, for example, under the name System-80. The Genie computers were produced by the company EACA in Hong Kong and were distributed in Germany by the company TCS (Trommeschläger Computer Service). TCS offered extensive peripherals for the Genie I/II computers. The TCS Video Genie was also known as the "Video Genie System".
The Video Genie was originally delivered with NEWDOS-80.But then there was G-DOS (a germanized and expanded
NEWDOS) and with various extensions to
the 64-character mode, the 80-character mode and "high-resolution"
graphics. With a banking adapter and memory expansion (necessary for the
older models), CP/M was also available and possible as operating system.
Emulation for G-DOS with german character set:
sdl2trs64 -rom vg1-TCS-rom.bin -charset1 genie -disk0 flogd02.dmk
and for NEWDOS:
sdl2trs64 -rom vg1-TCS-rom.bin -disk0 flond62.dmk
There were also various adjustments to NEWDOS / G-DOS in the user groups of the time.
Here are the adaptations by Arnulf Sopp which he called H(acktory)-DOS. The H-DOS 2.3c supports the "EG-64 MBA (Memory-Banking Adapter" from TCS and this is also emulated with SDLTRS. The command B? displays the corresponding RAM banks of the EG-64 MBA. See also the german documentation for HDOS.
sdl2trs64 -rom vg1-TCS-rom.bin -charset1 genie -disk0 hdos23c.dmk
In SDLTRS: Press ALT-I, select "Model I Character Set" and there select
"Genie", with ENTER, TAB or SPACE confirm and press ESC... or on the
command line with the option -charset1 genie ...
This character set is then used:
/* CG 10 - german charset for Genie I/II & Video Genie from: http://oldcomputers-ddns.org/public/pub/rechner/eaca/genie_1/roms/vg1_mit_tcs-expansion/tcs-rom-ext_zeichensatz_2716.bin */
With the option of memory expansion and/or bank switching, CP/M 2.2 was also possible, giving access to another large software area. Since port 0xFE got a bit "tight" for the emulator, there are a few changes:
The option for "CP/M-Banking" (Mattes/Schmidtke) is:
-speedup cpm, while the clock frequency remains at 1.78 MHz: it becomes a bit more "cozy"
- with -speedup lnw the LNW80 emulation is activated: 4 MHz and "fade in" the HRG into the lower 16K
sdl2trs64 -rom vg1-TCS-rom.bin -charset1 genie -speedup banking -disk0 flocpm01.dmk
With the Schmidtke CP/M for the Videogenie the driver for the 80-Z card
can be installed with
copy sys.sys=sys80.sys. After a "cold
start" with SHIFT-F10, this is then activated and 80*22 characters are
displayed. In the Schmidtke-CP/M, the keyboard layout has been changed
somewhat: the colon is on SHIFT-0 (function key F6 in SDLTRS), the
semicolon is replaced in the "original" by SHIFT + SPACEBAR + ;, in SDLTRS
this is currently only possible via the "Virtual Keyboard": ALT + J and
select Keyboard there.
sdl2trs64 -rom vg1-TCS-rom.bin -charset1 genie -speedup banking -disk0 flocpm02.dmk
sdl2trs64.exe -rom g3_holte_eprom.bin -disk0 g3gd21-1.dmk
sdl2trs64.exe -rom g3_holte_eprom.bin -disk0 g3gd24-1.dmk
dl2trs64.exe -rom g3_sysrom_5100-01_2716_save.bin -disk0 cpm-2_2XV3-for-GenieIII.jv3
sdl2trs64.exe -rom g3_holte_eprom.bin -disk0 hv22d_01.dmk -serial ""
sdl2trs64.exe -rom g3_holte_eprom.bin -disk0 g3-gplus.dmk -serial ""
sdl2trs64.exe -rom g3_holte_eprom.bin -disk1 hv22d-02.dmk -disk0 hv22d-03.dmk
sdl2trs64.exe -rom g3_holte_eprom.bin -disk0 g3lowe01.dmk -serial ""
sdl2trs64.exe -rom speedm.rom tcs -doubler both -disk0 speedm.dmk -speedup tcs
CP/M 2.2a from Thomas Holte
sdl2trs64 -rom vg1-tcs-rom.bin -doubler percom -speedup tcs -disk0 g2s-cpm22x.dmk
Genie IIs with the CP/M from Gerald Schroeder. Gerald Schroeder replaced the Z80 with a moderne HD64180 and build the CP/M for his system.
sdl2trs64.exe -rom speedm.rom -disk0 g2s-gs-cpm.dmk -doubler both
As of the special hardware and using a terminal over rs232 connection in
this emulating is no cursor seen but the system is running.
Below the Genie IIIs from TCS with the metallcase of 1mm dickness. The picture is from the TCS flyer as my Genie IIIs is open at the moment.
sdl2trs64 -rom g3s_8501004_bootrom_2732.bin -disk0 g3s-h-f1.dmk -disk1 g3s-holte_jens.dmk
sdl2trs64 -rom g3s_8501004_bootrom_2732.bin -disk0 g3s_f09.dmk
sdl2trs64 -rom g3s_8501004_bootrom_2732.bin -disk0 escpm010.dmk
sdl2trs64 -rom g3s_8501004_bootrom_2732.bin -disk0 gdos24_master_char.dmk
sdl2trs64 -rom g3s_8501004_bootrom_2732.bin -disk0 g3s-gdos24.dmk