website/content/museum/timex-computers-tc-2048.md

title, categories, types, origins, years, cpus, params

title	categories	types	origins	years	cpus	params
TIMEX COMPUTERS TC-2048	Computers	Home Computer	Portugal	1984	Z80A	name image company company_name specs tabs forum_thread photos hardware links related oc_id source TC-2048 /media/museum/photos/timex_2048_system_3.jpg /companies/timex-computers TIMEX COMPUTERS label value NAME TC-2048 label value MANUFACTURER Timex Computers label value TYPE Home Computer label value ORIGIN Portugal label value YEAR 1984 label value BUILT IN LANGUAGE Sinclair BASIC label value KEYBOARD 42 plastic keys label value CPU Z80A label value SPEED 3.5 MHz. label value CO-PROCESSOR Custon ULA chip label value RAM 48 KB label value ROM 16 KB label value TEXT MODES 32 chars. x 24 rows, 80 columns extended mode label value GRAPHIC MODES 256 x 192 dots in colour mode, 512 x 192 dots in monochrome mode label value COLORS 8 label value SOUND 1 voice, 10 octaves, built-in speaker label value SIZE / WEIGHT Unknown label value I/O PORTS Tape recorder IN & OUT, RF TV video output, Composite video output, Joystick connector (DB9), expansion bus connector label value OS BASIC based label value POWER SUPPLY External power supply unit (ground in the center), 9v DC at 1000 mA. label value PERIPHERALS All the Sinclair Spectrum and third party expansions label value PRICE About 200 (Portugal, 198?) photos hardware links 912 title subtitle text image LARGER VIEW Thanks to **Dimitri Kokken** /media/museum/photos/timex_2048_system_2.jpg title subtitle text image LEFT SIDE We can see here the joystick connector /media/museum/photos/timex_tc-2048_l-side.jpg title subtitle text image REAR From left to right: (1) External AC power supply connector\ (2) Spectrum compatible I/O connector\ (3) Composite video output\ (4) Tape recorder In/Out jacks\ (5) RF/TV modulator /media/museum/photos/timex_tc-2048_rear.jpg title subtitle text image OPENED Thanks to **Alejandro Cifuentes** /media/museum/photos/timex_2048_opened_1.jpg title subtitle text image TC-2048 MAINBOARD **(1)** Joystick connector\ **(2)** RF/TV modulator\ **(3)** Tape recorder In/Out jacks\ **(4)** Composite video output\ **(5)** Keyboard connector\ **(6)** Spectrum compatible I/O connector\ **(7)** Z80A processor, here a Nec D780C version\ **(8)** 16 KB ROM chip holding the BASIC interpreter\ **(9)** External AC power supply connector\ **(10)** On/Off switch\ **(11)** internal 5v DC regulator and its cooler\ **(12)** 4264 RAM chips\ **(13)** Custom ULA chip made by NCR\ **(14)** Loudspeaker Picture from **Alejandro Cifuentes** /media/museum/photos/timex_2048_mainboard_1.jpg title subtitle text image TIMEX SINCLAIR 2020 Tape recorder /media/museum/hardware/timex_sinclair_2020_1.jpg title subtitle text image TIMEX SINCLAIR 2040 Printer The TS 2040 was the rebadged US version of the ZX Printer that could be connected to all of the Timex (and Sinclair ZX-QL) systems. It used the same thermal metallised paper rollers. LPRINT and LLIST commands redirected output to the printer. COPY did a screen dump. /media/museum/hardware/timex_1000_printer2040_1.jpg title subtitle text image TIMEX SINCLAIR 2040 Box /media/museum/hardware/timex_1000_printer2040_box_1.jpg title subtitle text image WESTRIDGE 2050 Modem The TS 2050 Telecommunications Modem was designed for Sinclair Research by Westridge Communications CIE. At the same period first deliveries of this modem should occur, Timex went out of the computer business. Westridge which then had a large stock of unsold modems decided to release them with the 'Westridge 2050' name. The modem was compatible with TS100, 1500 and 2068 models. A specific software was delivered for each model. It used an Intel 8251 USART chip with 300 baud capability through a direct connexion to a telephone socket. /media/museum/hardware/timex_2068_modem2050_1.jpg title subtitle text image TIMEX FDD 3000 Floppy Disk Drive The Timex FDD 3000 was a Full Computer made by Timex Portugal. It could also be used as a Floppy Drive System for ZX Spectrum, TC 2048 and Clones, including the Timex 2068.\ It featured:\ Z80 Processor\ 64 KB RAM\ 2 x Serial Ports\ 2 x 3" floppy Disk Drives As it was a full computer it allowed to run CPM on it with Timex Computers acting as a terminal, or it could act as a Floppy drive system that kept the ZX Spectrum or compatible computer free because of the FDD own processor and RAM.\ On 'floppy drive mode' user ran TOS (Timex Operating system). Thanks to **Jose Pina Coelho** for the pictures /media/museum/hardware/timex_2048_fdd3000_s1.jpg title url text TS1000.US http://www.ts1000.us/ "TS1000.US, a tribute to the most unique and powerful small computer ever built!"... with docs, tips & tricks, software, info, etc. /museum/timex-sinclair-1500 /museum/timex-sinclair-2068 935 url date https://web.archive.org/web/20221224085219/http://www.old-computers.com/museum/computer.asp?c=935 2022-12-24

In fact, two different systems were called Timex 2048.
The first, called TS-2048 (for Timex-Sinclair) was designed by Timex USA but never passed the prototype stage. It was a 16K version of the TS-2068 with the same silver case but reduced features, a Kempston joystick interface and additional video modes. At the time when it was ready to be launched, the market had moved to 48K and 64K systems, and there was no future for a new 16K machine.

The second, named TC-2048 (for Timex Computers) was designed and made in Portugal by the Timex Portuguese subsidiary. It kept some features of the US prototype - joystick interface and extra video modes - and was 99% compatible with the ZX Spectrum. Slight differences in BASIC ROM and edge connector prevented some rare game software or peripherals to run correctly.

However, it was a better quality machine than the genuine Sinclair. Plastic-key keyboard was more reliable and had a full-sized space bar, a power switch and power Led were added and the custom ULA chip offered better IRQ and memory management.

Thanks to its extra video modes, the TC-2048 was able to display 80 columns text. Coupled with an external floppy disc unit - generally, the FDD-3000 - it could run CP/M O.S. and software.

As Timex Computers was only allowed to distribute the TC-2048 in countries where the Sinclair Spectrum wasn't established, it was only sold in Portugal and Poland. it met a great success in both countries where several ten-thousands machines were sold.

Thanks to Alejandro Cifuentes for the picture.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.