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Old 09-28-2009, 03:06 AM   #1
Azul Fria
Ice Queen Zero
Join Date: Jul 2008
Posts: 514
Default SDLTRS v1.0.0

sdltrs is a Radio Shack TRS-80 Model I/III/4/4P emulator for Macintosh OSX, Windows, and Linux. It has been ported from Tim Mann's excellent X-Windows UNIX emulator xtrs. Instead of using the X-Window system for graphics, it uses the portable SDL library.

Here's what's new :

The first thing you will need is to obtain ROM files for the TRS80. These are not included with the emulator:
  • ROM images for Model I/III/4 are available elsewhere on the Web. I do not know the copyright status of these ROM images, and I have no connection with the sites that offer them. Some MS-DOS based TRS-80 emulators (http://discover-net.net/~dmkeil/) come with Model I and Model III/4 ROM image files. These files will work in sdltrs too.
  • Alternatively, for Model III or Model 4 emulation, sdltrs can use a MODELA/III file as its ROM image. This is not identical to a real Model III/4 ROM, but is close enough that almost 100% of TRS-80 programs will work with it. The LS-DOS 6.3.1H operating system disk that Tim Mann distributes (http://www.tim-mann.org/trs80/ld4-631.zip) includes a MODELA/III file. You can boot this operating system using sdltrs's Model 4P emulation and export the file for use in Model III and 4 emulation, or for convenience, download the MODELA/III file directly here: http://www.tim-mann.org/trs80/ld4-631.iii
  • For Model 4P emulation, you can use Pete Cervasio's free minimal Model 4P boot ROM, now supplied with sdltrs; however, the free ROM can boot only Model 4 operating systems (not Model III), and only from floppy disks. The original Model 4P boot ROM is copyrighted software, but if you own a Model 4P, you can copy its boot ROM onto a floppy for personal use using the instructions and tools in this article, originally published in the Misosys Quarterly 1.2: http://www.tim-mann.org/trs80/doc/rom4p.zip. You can also buy Frank Durda IV's improved Model 4P ROMs from M. A. D. Software: http://madsoft.lonestar.org/

Once you have these files, you can place them in the same directory as the emulator program (sdltrs) or you can place them anywhere you like on your disk as well. Then within the sdltrs program, you need point the emulator to the ROM files (F7 enters the Text GUI on Windows or Linux, Cmd-, enters Preferences on the Mac -- The html docs have descriptions of both GUI's and how to set the ROM locations).

If you enjoy SDLTRS, and would like to donate to the development, go to: http://store.kagi.com/cgi-bin/store.cgi?storeID=6FBTU&&

Have retro fun<nowiki>!!!!!!</nowiki>

-Mark Grebe

Download the emulator here(windows) or here(Mac OSX) or at the author's website
via EmuWiki.com

Last edited by Azul Fria; 09-28-2009 at 03:10 AM. Reason: fixing formatting mistakes
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