The ZX Spectrum+ (ZX Spectrum Plus) is a low-cost home computer, manufactured in 1984 by Sinclair Research Ltd in the United Kingdom. It is a restyle of the ZX Spectrum with 48 KB of RAM: it has a larger case and a plastic keyboard instead of rubber. The technical characteristics of the ZX Spectrum+ (ZX Spectrum Plus) are the same as the Sinclair ZX Spectrum.
The Sinclair ZX Spectrum+ generates a color image and has an internal buzzer for audio.
I decided to buy this retro computer, along with other computers, in summer 2021. Here is the video of the purchase of the lot:
Sinclair ZX Spectrum Plus start screen
The Spectrum Plus startup screen shows "(c) 1982 Sinclair Research Ltd" at the bottom, which remains until a button is pressed. The image is available at the RF output (analog channel 36). In the case of my computer, the seller had already done the composite video editing, so at the output connector there is no RF signal, but there is CVBS composite video.
Technical characteristics of the ZX Spectrum+ (ZX Spectrum Plus)
CPU: Zilog Z80A a 3.5 MHz
ROM: 16 kB
RAM: 48 kB
Video: 16 colors, text 32 columns × 24 lines, graphics 256 x 195 pixels
Audio: buzzer
Keyboard: QWERTY 58 keys
Software included in ROM: Sinclair BASIC
Expansion ports:
- 1 Expansion port
- 1 Antenna (RF connection to TV)
- 2 Cassette recorder ports (out and in)
Dimensions: 31.9 cm (width) x 14.9 cm (depth) x 3.8 cm (height)
Emulation
It is possible to emulate the ZX Spectrum+, on a common Windows PC, through the EightyOne emulator, which also emulates other Sinclair models. In this way, you can try to start programs and games, as well as program the back computer, in a simple and convenient way... without even owning the Sinclair ZX Spectrum Plus!
Power supply
The power supply of the Sinclair ZX Spectrum+ is external. It generates a single 9 V voltage in direct current, unstabilized, with wide tolerance. The available current is 1.4 A.
Papers
1. Sinclair Spectrum BASIC programming manual
2. Sinclair ZX Spectrum introduction
3. Sinclair ZX Spectrum service manual
Date of entry into the collection: 08/25/2021