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This listing is for BIOS/CMOS configuration software for all Tandy computer models available. These programs are used to change the BIOS setup of Tandy systems. On most non-Tandy systems, setup is entered by pressing a certain key combination at boot time. Tandy's do not work that way; to set them up, you run a program from the DOS command line (there may also be a bootable setup diskette, and some setups run under Windows, but there is always a DOS version).

You need to make sure you get the right setup program for your system; some of the older setups do not detect the system. Check the model number, printed on the back or bottom of the machine, as well as the BIOS version.

Not all 1000'shavesetup programs. If your 1000-series system is not listed here, it doesn't have EEPROM or CMOS and uses jumpers and switches on the motherboard for setup.

= Tandy 1000 =

The original Tandy 1000 was a large computer about the size of an IBM PC, but with a plastic case over an aluminum lower chassis to save weight. It contains one 5.25" double density floppy disk drive and has an additional exposed internal bay that can be used to mount a second 5.25" disk drive (available as a kit from Radio Shack) . Floppy drives use jumpers to select drive numbers instead of twisting IBM cables. Standard memory is 128 KB, and the computer accepts up to 640 KB of total memory with the addition of expansion cards. This computer comes with MS-DOS 2.11, DeskMate 1.0, and a keyboard with the same layout as the Tandy 2000. Like the PCjr, the Tandy 1000 motherboard does not offer DMA, but unlike that system, DMA can be added using a memory expansion board. The Tandy 1000 has three XT compatible expansion slots, but early Tandy memory upgrade boards occupy two of the slots to reach 640 KB. The slot is 11+1⁄2 inches long instead of the PC's 13 inches, so full-length cards won't fit, but reviewers say many built-in hardware features reduce the need for cards. points out. The Tandy 1000 model is the Tandy 1000A. This revision fixes a bug, scans expansion cards for bootable ROMs, and adds a socket for the Intel 8087 math coprocessor.

= Tandy 1000 HD =

The original Tandy 1000 (and many other models), like most home computers sold at the time, lacked a hard drive. The Tandy 1000 HD is essentially the Tandy 1000A with a factory-installed hard disk option. The hard disk capacity at the time of shipment from the factory is about 10 MB or 20 MB.

= Tandy 1000 SX and TX =

The Tandy 1000 SX and TX are upgraded versions of the original Tandy 1000 using a similar chassis. Two major upgrades to the original Tandy 1000 were the inclusion of a DMA controller, which increased the speed of diskette operations and IBM PC compatibility of these systems. The second is the addition of two additional ISA expansion slots, providing a total of five 8-slots. bit ISA slot.

== 1000 SX ==

The Tandy 1000 SX uses a 7.16 MHz 8088-2 processor, comes with 384 KB of memory (upgradable to 640 KB on the motherboard), one or two 5.25 inch internal floppy disk drives, a light pen port (not ). serial port), similar to the original Tandy 1000. An adjustable potentiometer within the system controls the volume of the internal speaker. The Tandy AX is the SX rebadged for sale in Walmart stores. The 1000 SX comes with MS-DOS 3.2 and DeskMate II on a 5.25" 360 KB floppy disk. The SX is the first Tandy 1000 to be able to disable the internal video circuitry by installing an upgraded graphics card (usually an EGA or VGA card) into the expansion slot.

== 1000 TX ==

The Tandy 1000 TX resembles the 1000 SX with the detached keyboard, proprietary parallel port edge connector, and slightly modified case XT-style architecture. The main difference is the 80286 CPU running at 8 MHz. The onboard peripherals and ISA slots are 8-bit wide, but have a 16-bit wide memory bus. The TX has a 3.5" internal floppy disk drive in a 5.25" bay with room for an optional second internal 3.5" drive. Or a 5.25 inch floppy disk drive. The back panel has the same ports as the 1000 SX, except that the light pen port has been replaced with an RS-232C serial port. The memory size is 640 KB with an additional 128 KB socket dedicated to onboard video logic. This additional 128 KB is only available for the onboard video controller, so expanding the onboard memory beyond 640 KB is not practical when a VGA graphics card is installed. This computer comes bundled with Personal DeskMate 2. The TX is the last 1000 series computer to use DIP switches to store system configuration parameters. All later 1000's rely on a serial EEPROM chip to store configuration settings.

= Tandy 1000 EX and HX =

The Tandy 1000 EX and HX were designed as entry-level IBM compatible personal computers and marketed as starter systems for users new to computing. They come in a compact all-in-one chassis with a 7.16 MHz 8088 (can be clocked down to 4.77 MHz), 256 KB of memory (expandable to 640 KB with a PLUS memory expansion board), PCjr- and CGA. -One 5.25 inch 360 KB floppy drive, or one or two 3.5 inch 720 KB floppy drives, depending on compatible Tandy Video graphics controller, keyboard, and model. An external floppy drive can be connected to the rear port. Only Tandy floppy drive units can be used with the EX and HX, as the machine itself powers the external drive. The external drive is the standard 360 KB 5.25 inch format, although in 1988 a 720 KB 3.5 inch model was offered. EX and HX can be upgraded via Tandy PLUS cards and these systems have bays for 3 cards. The PLUS card connector is electrically identical to the ISA slot connector, but uses a Berg-style 62-pin connector instead of the 62-contact ISA card edge connector. You can install other PLUS cards to add a serial port, 1200 baud modem, clock/calendar, bus mouse board, or your own Tandy network interface. Radio Shack later sold an adapter card that allowed the PLUS card to fit into a standard ISA slot, such as the slot on the larger Tandy 1000 models. Like the original Tandy 1000, the EX and HX do not have a built-in DMA controller, but a DMA controller can be added using the PLUS memory expansion board.

== 1000 EX ==

The Tandy 1000 EX features a 5.25 inch floppy drive built into the right side of the computer case. The EX was sold by Radio Shack in December 1986 for his US$1,000. The EX and later the HX was one of Tandy's most popular. 1000 lines because the price is cheap. A useful feature for EX and later systems is the ability to boot from either drive. This allows you to logically swap drives when the system boots so that what was normally drive B: becomes drive A: and vice versa. The drive remains replaced until the system is powered off or reset. (SX and TX also have this feature.) The 1000 EX comes with MS-DOS 2.11 and a Personal Deskmate on a 5.25 inch 360 KB diskette. MS-DOS is a Tandy 1000 specific version and can only be booted on the Tandy 1000. It contains a version of BASICA (Microsoft's Advanced GW-BASIC). Support for Tandy 1000 enhanced CGA graphics mode (aka Tandy graphics or TGA) and 3-voice sound hardware.

== 1000 HX ==

The Tandy 1000 HX is an updated version of the EX released in 1987. It uses the same architecture and PLUS card as the EX, but has 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-inch bay and floppy drive. The ROM also contains Tandy MS-DOS 2.11R, which can be accessed by booting the computer without a boot disk. Another improvement to EX is the addition of the following features: Serial EEPROMs that store configuration information allow functionality similar to later CMOS NVRAM. By comparison, early Tandy 1000 models such as the IBM PC and PC/XT systems use DIP switches and jumpers for boot configuration settings. By embedding the basic elements of DOS into ROM and skipping the boot memory test, HX boots faster than other modern MS-DOS machines, even though it doesn't have a hard drive out of the box. To do. In addition to Tandy MS-DOS 2.11R, HX ships with Personal Deskmate 2. Most versions of MS-DOS will work with the 1000 HX, including DOS 3.x and later. DOS 4.0 is not compatible and the MS-DOS 6 installer can corrupt the contents of the serial EEPROM.

= Tandy 1000 SL and TL series =

The Tandy SL series and TL series computers are SX and TX updates respectively. In addition to offering a redesigned case, these machines offer a more integrated motherboard that removes the composite video output while improving graphics and sound capabilities. The graphics controller supports 640 x 200 x 16 resolution plus 720 x 350 mode for monochrome monitors compatible with Hercules graphics cards. Sound features include an 8-bit mono DAC/ADC with functionality similar to a parallel port sound device (such as the Covox Speech Thing or Disney Sound Source), but with DMA transfers, microphone input capability, and up to 48 kHz Extended to support sampling rates. . SL/TL can disable the onboard floppy controller, parallel port, and serial port, but older models do not. The SL and TL ship with MS-DOS 3.3 and DeskMate 3 in ROM and have a serial EEPROM memory chip to store the BIOS settings. These machines can also run the generic MS-DOS 3.x, 5.x, 6.x, and Windows 2.x and 3.0 operating systems, but Windows is limited to real mode operation. Like many PC clones of the time, MS-DOS 4 was problematic and generally avoided.

== 1000 SL and SL/2 ==

The Tandy 1000 SL and SL/2 are powered by the Intel 8086 processor running at 8 MHz. This is plugged into a socket and can be upgraded to the NEC V30. The SL comes with 384 KB of RAM pre-installed, while the SL/2 comes with 512 KB. Both machines can grow to 640 KB, but the graphics controller reserves some of this memory, so even systems with add-in ISA graphics cards only present 608 KB to the operating system. is. The SL line has a mic/earphone port, volume knob and reset button on a small satellite board. A jumper on the board allows you to change the microphone input to line level output. The SL series offers five 8-bit XT compatible ISA slots, but does not come with a pre-installed real-time clock chip, making it an optional upgrade in the form of a plug-in Dallas DS1216E SmartWatch. The SL is the only machine in the line that offers an upper 5.25" bay, and is therefore the only model that offers two 5.25" bays, while other models, including the entire SL/2 and TL series, offer a 3.5" upper It has two bays. bay and one lower 5.25 inch bay. As a result, to install a hard drive in an SL that already has upper and lower 5.25-inch bays populated, either remove one of the devices in those bays, or remove a hard disk card-style bracket that fits in that bay. may need to be installed. One of the ISA slots.

== 1000 TL, TL/2 and TL/3 ==

The Tandy 1000 TL and TL/2 use an 8 MHz Intel 80286 processor, while the TL/3 uses a 10 MHz 80286. The TL comes pre-installed with 640 KB of memory, with an optional additional 128 KB for video frame buffering. 1000TX. Unlike the SL-series machines, the TL-series incorporates SmartWatch real-time clock logic and is powered by a removable 3-volt CR2032 coin cell battery on the motherboard. TL offers five 8-bit XT compatible ISA slots, while TL/2 and TL/3 offer four slots and an onboard 8-bit XT IDE compatible hard disk interface that is not compatible with the standard AT IDE To do. hard drive. The TL-series offers two 3.5-inch bays on top and one 5.25-inch bay on the bottom, and features a high-density floppy drive controller for 1.44 MB drives, but comes with double-dense 3.5-inch 720 KB drives. TL-series processors are socketed, so you can install upgrades to 386SX or Cyrix 486SLC-based processors, but the computer's XT-based architecture means that the benefits of installing a more advanced processor are simply It is more limited than it provides a speed boost. , resulting in inability to access extended memory beyond 1 MB.

= Tandy 1000 RL-series and RSX =

The Tandy 1000 RL/RLX/RSX is a slimline desktop home computer. The case is much more compact, with at least 512 KB of pre-installed memory, a small PS/2-style keyboard and mouse port, and at least one ISA expansion slot. RL-series and RSX include internal hard drive provisioning depending on model. The RL series has an internal XT-IDE hard drive interface and the RSX has an AT compatible IDE interface. The RL-series keyboard connectors are similar to PS/2 style connectors and are mechanically compatible, but the keyboard uses the XT keyboard protocol, which makes them perfectly compatible with common PS/2 keyboards. Not compatible. However, RSX incorporates the AT keyboard protocol, making it the first 1000 series system to offer more complete compatibility with AT keyboards using common PS/2 keyboards and adapters.

== 1000 RL and RL/HD ==

RL and RL/HD feature a surface-mount 9.54 MHz 8086 processor, 512 KB of RAM (expandable to 768 KB to provide 128 KB for video and 640 KB for conventional memory), DB- It has 25 one-way parallel ports. Connector port, SL enhanced graphics and sound. One half-size 8-bit expansion slot is available. RL/HD contains a battery-powered real-time clock chip to store date and time information. RL lacks this and requires a plug-in smartwatch chip. These models have MS-DOS and part of the DeskMate built into the ROM, so they boot much faster than many other computers on the market. RL/HD comes pre-installed with a 20MB drive.

== 1000 RLX ==

The RLX is the "mid-range" part of the RL series. It has a 10 MHz 286 (surface mount) and 512 KB of RAM, and unlike other 286-based Tandy 1000 models, it supports 384 KB of extended memory when RAM is expanded up to 1 MB. However, this is not a full AT class machine, it still has only an 8-bit ISA bus (with one half-sized expansion slot, like RL), 8 IRQs and 4 DMA channels. The 3-voice sound chip and DAC are still present, but the Tandy video has been discontinued in favor of the AcuMos VGA controller, which offers 256 KB of video memory and standard VGA graphics resolution. The parallel port is bi-directional for the first time on the Tandy 1000 series. The RLX has one 1.44 MB 3.5 inch floppy drive and can host a second drive in an empty drive bay. Hard Disk RLX/HD comes pre-installed with a 20 MB hard disk and 1 MB RAM. Hard disks occupy empty drive bays. Therefore, this version only supports one floppy drive.

== 1000 RSX ==

A more premium product, the RSX features a 25 MHz 80386SX processor, 1 MB RAM, two 16-bit ISA slots, AcuMos SVGA video, offerirectional parallel ports, and standard PS/2 keyboard and mouse ports. This is a complete 386 class PC and can run Microsoft Windows 3.x. There are two sockets for SIMM memory cards. Only 9-chip type 1MB or 4MB SIMMs are supported and must be of similar capacity if two are installed. With two 4 MB SIMMs installed, the 1000 RSX can be expanded to 9 MB RAM without using an ISA slot. The RSX/HD variant comes with a 52MB hard drive that uses an AT compatible IDE interface. It can replace a replacement hard drive up to 504 MB. Due to the slim case, only one hard drive can be installed side by side with the 1.44 MB 3.5 inch floppy drive. The motherboard has a socket for the 80387SX math coprocessor. The RSX still retains the Tandy 1000 3-voice sound hardware and DAC, but the 3-voice sound chip's I/O address has been moved and many compatible games can no longer play music unless changed. . A DAC can be used to emulate the Covox Speech Thing through MS-DOS device drivers for limited sound support. This works for Chuck Yeager's Air Combat. A Windows 3.xx sound device driver is available that works with Windows 95 (full 9MB RAM) on the Tandy 1000 RSX. Since the Windows 3.xx Tandy VGA drivers are insufficient for Windows 95, the ACUMOS VGA graphics has been updated with a software update in the Cirrus Logic BIOS (via MS-DOS drivers) to enable VESA/SVGA functionality under Windows 95.

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