* Posts by subminiature

1 post • joined 2 Jul 2012

The Grundy NewBrain is 30


Promise and potential but management handicapped

Basil Smith and Mike Wakefield joined the project after the design was well underway; something I didn't realise until many years later.

The design for the BBC micro was the Newbury NewBrain. The change in software and hardware, particularly adding colour was the result of Acorn actively bidding for the contract. Newbury did not supporting the bidding for the contract and Acorn at least had a working and commercial computer in the Atom. Newbury, then Grundy Business Systems, had only the battery powered Vestic machine with built in ROMS. Management did not want to supply the BBC micro and didn't try to get the contract.

The battery power machine relied upon CMOS components and was never made. The battery module for the Model AD would run for about an hour. Some owners replaced as many of the components, in the AD, as they could and achieved longer battery life.

In 1982 there were plans for modular cases to house the modules and expansion boards. This wasn't happening so the tower shown was made as a stop gap. As even these didn't appear in numbers loans of machines to software companies where supplied with an 'oil rig' tower to support the monitor with floppy disc controller and 96K expansion module in slim brown cases held together by locking keys. The brick at the back was the multiple power supply for four modules (the computer/keyboard module being one of them). This was so over engineered that it would also run a pair of 3.5" floppy drives (in house custom alteration).

Disc controllers and expansion modules were sold in limited numbers. All the components for a production run where supplied but there were hold ups in soldiering the boards. Tradecom battled to get these as the contractor hadn't been paid, but had been making a little return selling completed but untested disc controllers. The same contractor also was sitting on components to built NewBrains - which Tradecom then got completed. Existing customers wanted the expansion boards. New customers were waiting for the arrive of the long promised expansions. It would have cost very little to have turned the stock of components into machine for the Christmas market.

The plug was pulled in August 1983, but heralded the collapse of the other microcomputer companies in in 82/83 leaving Acorn, Sinclair and the late to market Amstrad as games machines with business having moved to the IBM PC.

There were many comments in the press and from people who didn't own a NewBrain about the keyboard. The keys have a full bounce and metal springs mounted on a metal plate. The spacing is exactly the same as on professional typewriters but the keys are straight, not tapered as used on most keyboards at the time. The small return key and short space bar where the only compromise for lack of space. There were many discussions about replacing the caps with ones that filled up the gap between keys so they looked 'proper'.

Cambridge based development gave overoptimistic delivery dates for modules but Teddington marketing gave unrealistic dates. At least they didn't stock pile customer's money months in advance.



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