As it uses a CGA-compatible interface, non-Tandy monitors that support CGA should work. In the early 1980s, Tandy began producing a line of computers that were "DOS compatible": able to run MS-DOS and certain applications, but not fully compatible with every nuance of the original IBM PC systems. Two major upgrades over the original Tandy 1000 were the inclusion of a DMA controller, which improved the speed of diskette operations and IBM PC-compatibility of these systems, and the addition of two additional ISA expansion slots, to offer a total of five 8-bit ISA slots. In 1987, they partnered with Diamond and through Radio Shack sold the Diamond Trackstar 128 series Apple IIe compatibility board for $399, and offered free installation in their Tandy 1000 series. While the three-voice sound chip and DAC were still present, Tandy video was dropped in favor of an AcuMos VGA controller offering 256 kB of video memory and standard VGA graphics resolutions. Windows 3.xx sound device drivers were available that worked in Windows 95 (with full 9MB RAM) on Tandy 1000 RSX. The layout of the keyboard prefigured the IBM Model M keyboard introduced with the IBM PS/2 series, with function keys arranged in a row at the top, instead of on the left as in the PC and PC XT/AT. The PCjr's enhanced graphics and sound standards became known as "Tandy-compatible". Radio Shack TRS-80 PC-2 Vintage Tandy Programmable Pocket Computer Case Ref Card. They were lower profile than typical modern PC keyboards and the keys were recessed in the center, giving them a "melted" look. Some scan codes differed between the Tandy 1000 and IBM PC/XT and AT, resulting in software compatibility issues. The RLX was the 'mid-range' offering of the RL line. Vintage Tandy 1000 HX CM-5 Personal Computer & Radio Shack Color Mouse Lot. Radio Shack also offered 2400-baud internal modem. The circuit … It also offered multiple built-in I/O ports, including a joystick port which was frequently a separate add-on card on non-Tandy machines. $89.99. Between 1977 and 1979, it sold 100,000 units. The RL/HD came with a 20MB drive preinstalled. The Tandy 1000 - The best MS-DOS computer in 1984. The Model 4's new hardware features included a larger display screen with 80 columns by 24 rows, inverse video, and an internal audio speaker. 6 Disks of Games for the Radio Shack TRS-80 Model I vintage computer. An adjustable potentiometer inside the system controlled the volume of the internal speaker. The Tandy 2000 system was similar to the Texas Instruments Professional Computer in that it offered better graphics, a faster processor (80186) and higher capacity disk drives (80 track double sided 800k 5.25 drives) than the original IBM PC. Originally, Tandy offered computers manufactured by Tandon Corporation, and then started producing their own line of systems. Many Tandy 1000 enhanced games are featured on YouTube. As the Tandy 1000 used the same game ports as the Tandy Color Computer series, the 26-3025 Color Mouse and 26-3125 Deluxe Mouse were compatible with the Tandy 1000, though not all DOS software and drivers were written to recognize them. While many 8-bit cards met this length requirement, some cards such as hard cards, EMS memory cards, and multifunction cards that required the standard 13" length did not fit in the 1000's case. This computer used a Tandy 1000 SL motherboard. The 1000 RSX featured two 16-bit AT ISA slots. Jan 28, 2019 - The Tandy Color Computer. 4K of memory, expandable to 16K Expanding the … See more ideas about tandy, computer, old computers. The RSX, however, incorporated the AT keyboard protocol, making it the first 1000-series system to offer more complete compatibility with typical PS/2 keyboards, and AT keyboards using an adapter. Like the original Tandy 1000, the EX and HX do not have a built-in DMA controller, though one can be added using the PLUS memory expansion board. The Model II was replaced in 1982 by the TRS-80 Model 12. Programs for the MC-10 were not compatible with the CoCo. There are also games and educational software that supports second generation Tandy 1000 graphics and sound, which offers 640 by 200 by 16 colors, and 8-bit DACs, found only on the 1000 sl/tl series. The SL is the only machine in the line that offers an upper 5.25" bay, and therefore the only model to offer two 5.25" bays, where the other models, including the SL/2 and the entire TL range, feature two upper 3.5" bays and one lower 5.25" bay. [4][5][6] "How could IBM have made that mistake with the PCjr?" The SL and TL were also shipped with MS-DOS 3.3 and DeskMate 3 in ROM, and featured a serial EEPROM memory chip to store BIOS settings. It utilized the same architecture and PLUS cards as the EX; however, one obvious difference was that it offered two 3.5" bays on the front panel, occupied by one or two 720 KB 3.5" floppy drives, as opposed to a single side-mounted 5.25" bay and floppy drive with the EX. or Best Offer. Games (792) | Utilities (1) | Educationals (2) Click on the title for more information about that thing. The MC-10 was a short-lived and little-known Tandy computer, similar in appearance to the Sinclair ZX81. TRS-80 Tandy 4-Port Multi-User Board- 25-4031 - SHIPS INTERNATIONAL. The RL-series and RSX include provisions for an internal hard disk drive, depending on the model: the RL-series featured a built-in XT-IDE hard drive interface, while the RSX featured an AT-compatible IDE interface. This worked with the game Chuck Yeager's Air Combat.[34]. It was also marketed to home users and businesses interested in both MS DOS and Apple II compatibility. It was more lightweight and came standard with 24K of RAM, expandable to 32K. Only 1 MB or 4 MB SIMMs of the 9-chip type were supported, and if two were installed they had to be of like capacity. Tandy Radio Shack TRS-80 Manuals. It was first used on the original TRS-80 (later known as the Model I), one of the earliest mass-produced personal computers. The Model II was not compatible with the Model I and never had the same breadth of available software. View and Download Tandy TRS-80 Model 16 service manual online. The market is big". There may be compatibility issues with later versions of DOS such as DOS 5 and DOS 6. or Best Offer. A look at the final member of the Radio Shack TRS-80 series of computers, the Tandy Model 4D, sold from 1985 until at least 1990 (possibly even later). [1] However, Tandy later used the TRS-80 name on a number of different computer lines, many of which were technically unrelated to (and incompatible with) the original Model I and its replacements. Also available as an option to the Model 100 was an external expansion unit supporting video and a 5​1⁄4" disk drive, connected via the 40-pin expansion port in the bottom of the unit. Tandy also produced the TRS-80 Color Computer (CoCo), based on the Motorola 6809 processor. If you are looking for books, expansions or just a more visual representation of this data, you can generate a "wall" to your exact requirements. screen doesnt turn on . The RSX/HD variant came with a 52 MB hard drive using an AT-compatible IDE interface; replacement hard drives up to 504 MB could be substituted. Watch. The original line was equipped with the Intel 8088 CPU, which was later extended to faster clock speeds and also the 8086, 80286 and toward the end of the line with the RSX, 80386SX processors. The Tandy SL and TL series of computers were updates of the SX and TX, respectively. The Tandy 200 was introduced in 1984 as a higher-end complement to the Model 100. Many Tandy 1000s sold to schools came with the Diamond Trackstar 128 installed,[26] and home owners also purchased this for compatibility with both DOS and Apple II software.[27]. Tandy Computer TRS 80 - Model 40. $51.00. May 28, 2019 - The fruits of Radio Shack's digital loins. This was somewhat mitigated by the availability of the CP/M from third parties. Radio Shack service manual for the TRS-80 model 4P and 4P Gate Array computers. Systems with RS-232C serial ports could use standard serial mice, and later systems, such as the 1000 RL, featured a PS/2 mouse connector. In addition, the hardware detection routine for the installer of Microsoft MS-DOS 6 could corrupt the serial EEPROM of Tandy 1000 HX machines. Tandy offered its first model with 4K of RAM, a 1.77 MHz processor and a 12-inch monitor for $600. In December 1983 an executive with Tandy Corporation, maker of TRS-80 computers, said about the new IBM PCjr: "I'm sure a lot of people will be coming out with PCjr look-alikes. Tandy Radio Shack TRS-80 Color Computer BASIC & Extended BASIC COMBO ROM Upgrade. However, it was not a full AT-class machine, as it still had an 8-bit ISA bus (as with the RL, one half-size expansion slot) and only 8 IRQs and 4 DMA channels. It was first used on the original TRS-80 (later known as the Model I), one of the earliest mass-produced personal computers. A more upscale offering, the RSX offered a 25 MHz 80386SX processor, 1 MB RAM, two 16-bit ISA slots, AcuMos SVGA video, a bidirectional parallel port, and standard PS/2 keyboard and mouse ports. Before its release, mobile computers, such as … Other PLUS cards could be installed to add serial ports, a 1200-baud modem, a clock/calendar and bus mouse board, or a proprietary Tandy network interface. TRS-80 Microcomputer System Model I (26-1003) 1977 The TRS-80 Model I, or just TRS-80 Microcomputer System as shown on the computer itself, was introduced in August 1977. The Tandy 2000 was the company's first computer built around an Intel x86 series microprocessor; previous models were built around the Z80 and 68000 CPUs. This early consumer PC gained its name from a combination of the store name with that of its parent company, Tandy, resulting in "Tandy/RadioShack" or TRS. With two 4 MB SIMMs installed, the 1000 RSX could be expanded to 9 MB RAM (without using an ISA slot). [22], Tandy 1000s could work with Windows 1.0, 2.0 and 3.0 but not 3.1, with the exception of the RLX which could run Windows 3.1 in Standard mode,[23] and the RSX which fully supported running Windows 3.1 in 386 Enhanced mode.[23]. Radio Shack offered Tandy 1000 PLUS 300-Baud PC Modem that was compatible with the 1000EX/HX that used PLUS slots. There was, however, a quirk in the DOS 4.0 environment that prevented that version of DOS from working with Tandy 1000 HX computers. Help support the museum by buying from the museum shop. 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