Editing MicroBee (section)

== The B-ETI Serial Terminal ==

The B-ETI was a Microbee-based serial terminal.  It could emulate either an [[ADM-3A]] or [[Televideo]] 912 terminal.  The display format was monochrome {{nowrap|80 × 24}} and it supported communication at either 300 or 1200 [[baud]].  An advertisement for a "special introductory offer" with an asking price of {{nowrap|A$275}} appeared in the December 1983 issue of ''[[Electronics Today International]]'' magazine.<ref>B-ETI Advertisement. (December 1983). ''Electronics Today International'', p. 51.</ref>

Introduction, BETI Users Guide:

The BETI was designed as a low cost serial terminal operating at speeds of up to 4800 baud (1200 baud without [[Handshake (computing)|handshaking]]). The BETI also provides optional automatic code conversion to and from the [[Baudot code|baudot]] 5 level code used for [[RTTY]] and [[Telex]] applications.

Specifications:<ref>"BETI Serial Terminal Operator's Guide", Microbee Technology.</ref>

* Codes supported: US ASCII and CCITT BAUDOT.
* Baud rates: 45.5, 50, 75, 110, 300, 600, 1200, 2400, 4800.
* Default settings: 4800 baud US [[ASCII]] [[Duplex_(telecommunications)#FULL-DUPLEX|full duplex]].
* Emulation: ADM-3A and TVI 912C (except for attributes).
* RS232 port: Configured as DTE with 0-12V swing.
* Parallel port: Connects to [[IEEE 1284|Centronics]] printer with adapter.
* Internal buffer: 1800 bytes.
* Power supply read: 9 - 12 V at 800 [[milliamp|mA]].
* Video output: [[Composite video]]: negative sync, 1V p-p into 75 ohms, 50&nbsp;Hz frame, 15625&nbsp;Hz line frequency.
* Screen format: 80 characters by 24 for lines, 64 by 16 lines for setup mode.
* Attribute: Reverse video, enabled by [[escape sequence]].
* Keyboard: Full size, 60-key [[QWERTY]] layout, positive travel. Two shot moulded key tops.
* Microprocessor: Z80A at 3.375&nbsp;MHz.
* Control program: 4k 2532 [[EPROM]].
* Sound generation: Built in loudspeaker for BELL.
* Case: 342mm W × 239mm D × 42mm H. [[Injection moulding|Injection moulded]] ABS.