Trs-80 model 4 software

Please choose your search criteria from the boxes below. Near the end of the trs80 product run came the tandy trs80 model 4 from tandy radio shack. The trs80 was a home computer originally released by the tandy corporation in 1977. Now emulates diskbased model iii using phillips v1. Model 4 computers have both an internal speaker i think all model 4s do and a cassette port. Introduced in 1983, it was an upgrade from the model 3 in that it ran at a blazing 4 mhz using a zilog z80 processor and had a display of 80 columns by 24 lines. Roy has been out of the business for some years, and he has given me permission to put his trs80 software and documentation up for free dissemination on the web.

Component part numbers are shown for digikey us and jaycar electronics new zealandaustralia. Little wonder this radio shack model is one of the most popular portables of all time. The tandy trs80 model 100 micro executive workstation was by far the most popular though, due to the radio shack chain of electronics stores throughout america. Looking at the inside i could see that the top of the computer is connected to the bottom with two connectors, one for the main power to the crt and the other for the card to control what gets displayed on the display.

Radio shack trs80 model 4 microcomputer computer system 261069 as is vintage see more like this. Software diskettes cd with many, many filesi used the memtest program to check the ram. Version 2 of trs80 model 4 rom adapter marks tech journal. The following document describes an ide drive interface for the trs80 model 4 and larry campanells modifications for the lnw80. It also includes max80, genie iii, lnw80, system80, and model 4 cpm, although those systems are incidental and are not really part of the archive. The trs80 model 100 instanton, with a comfortable keyboard and 20 hours of battery life. Inside of the trs80 model 4 with some good luck i got the top off, turned it sideways and set it back down. It is an extremely fast emulation, written and optimized from the ground up in 80386 assembly language. I offer thanks to those that spent the time scanning these docs as it is a time consuming and thankless job. Includes emulation of model 3 mode, floppy drives, hard drive, sound, high resolution graphics, up to 128k of memory, realtimeclock, rs232 communications, and more. This program emulates a popular early microcomputer, the trs80 model 4. This machine, like the first model i and the model iii was given to me by graeme draper. Software for the trs80 model iv from the trs80 archives.

Name last modified size description parent directory. The trs80 model 100 was designed by kyocera of japan, who licenced the same design to nec, tandy, and olivetti, who subsequently released almost identical computer systems. It was one of the earliest massproduced personal computers. It provides vga video and ps2 keyboard so as to be usable with commonly available hardware todate well, ps2 keyboards are becoming rare, but it works with a usbtops2 adapter as well. Trs80 64k model 4 ian mavrics high resolution card i bought another for my 4p. Back in march 2017, i bought a trs80 model 3 on ebay. Tandy trs80 model 4 retro computer introduction and teardown duration. Definitive list of trs80 model ii operating systems.

Another company called intellitech sold a program called supermod4 that allows model iii programs running on a. The distribution zip also contains an rsm level i loader and a relocation program. Stocking up a trs80 model 4 with software classic computers nz. It connects to the buffered expansion port, and provides these benefits. This page is the main search page for trs80 model i, iii, and 4 software. Trs80 model i and 3 computers can only output audio through the cassette port. Model 4 can run all model iii trsdos and ldos programs in model iii mode. This service is inspired by and adheres to the concepts laid out by ira at. I replaced one of the disk drives that was behaving badly and gave the heads on both a good cleaning while the computer was apart. With its single case formfactor, it looks just like a vintage computer should. Instantly run any program below in a trs80 javascript emulator.

Deskmate is a gui shell, program environment, and organizational application suite bundled by tandy with their computers. The model 3, by comparison, only ran at 2 mhz and displayed 64 columns and 16 lines. The following documents were found from various locations on the web. A look at the final member of the radio shack trs80 series of computers, the tandy model 4d, sold from 1985 until at least 1990 possibly even later. Trs80 model 4p computers only have an internal speaker. As i posted earlier, the assembled board was a bit too tall to fit under the aluminum shield that is present on us model 4 computers, and it also. The big list of trs80 software instantly run any program below in a trs80 javascript emulator. The m3se model iii system expander is an addon device for the vintage radio shack trs80 model iii, model 4, model 4d, and model 4p microcomputers. Index of cpmarchivestrs80softwaremodel 4m classiccmp. Tandy releases the trs80 model 2000, which uses the intel 80186 microprocessor. Ensure the emulator is configured as a 48k trs80 model 1 or system 80 machine with disk drives enabled. Radio shack tandy trs80 portable computer model 4p untested past powering on. Clear the search box to show the entire planet emu list.

But it wouldnt boot from disk, either from the supplied trs80 boot disks, nor my video genie boot disks. However, ever since acquisition the machine has sat in its box softwareless and lonely. Welcome to the model iii44d4p system expander m3se project. Trs80 model 4 64k 2 drive computer with high resolution. So on the model 4 it will show a speaker cassette line showing where audio output goes. Compare the features of the model 4 personal desktop computer to any other computer in its class. It came with some model 4 software which have all been transferred and is now to be found on here it is displaying the opening position of the chess game from the micro labs hires games floppy. He has expressed his support for our efforts to do likewise for the model ii. Search the trs80 software archive ira goldklangs trs. The first two fully graphical versions were renamed personal deskmate i and ii. Trs80 model 1iii4 4p game software page last updated on april 8, 2005.

Trs80 model ii archive project pski software development. Regarding dosplus for the model ii, in 2005 i contacted steve pagliarulo asking if he had the source code still and unfortunately he said he had looked but could not find it. The name is an abbreviation of tandyradio shack, z80 microprocessor. Ira has offered these types of disk services for many years for the trs80 model iiii4 machines. This list includes software that was sold labelled as a radio shack or tandy product. After the boot is finished, type dir at the cursor. To many enthusiasts the trs80 model 4 was the ultimate development in tandys platform of z80based home and smallbusiness microcomputer. Tandy 3 microcomputer rare, not model iii, this is a tandy 3 added 1 april, 2012 trs80 model 1 with both level 1 and ii installed in the keyboard unit added 8 april 2012 how to change a trs80 model iii or 4 crt. Listening to model i and iii users requests tandy added 80x24 screen, cpm compatibility, 64k ram upgradeable to 128k banked ram, more speed, function keys, an easierontheeyes green crt, a stylish.

Welcome to the humongous trs80 archives, a humongous collection of trs80related sites, books, magazines and software. The unregistered shareware version of the program emulates a 64k. For power, versatility and convenience, youll find model 4 is a true price breakthrough. It was simply a case of finding the time to load it with programs. Older pc hardware with a compatible floppy disk controller is required to use the file transfer utilities. The model iii had been only partially compatible with model i software and lack of compatibility was viewed as a costly misstep by radio shack.

Radio shack unveils the trs80 model 12 at the cpm 83 show. File formats viewers download contributors misosys is roy soltoffs old trs80 software company. It also includes max80, genie iii, lnw80, system80, and model 4 cpm, although. There are several variations of these docs floating around the net, and it can be confusing knowing exactly what doc you need vs. It would boot to the basic rom by holding down the break key as you reset it. Model 4 library catalog 1 for model iv dsk david sampson 19xx baslbr10. And please let us know if theres anything were missing. I previously designed a small adapter board to allow a regular 2764 eprom to be plugged into a trs80 model 4 gate array version only in place of rom chip u4, in order to use the new autobooting feature of the frehd hard disk emulator. Search the trs80 software archive ira goldklangs trs80.