>> I've just been upgrading an old QL from JM ROM to JS ROM and >> accidentally broke one of the keyboard membrane tails. >> >> This QL has been in use from 1984 without a single change of >> keyboard >> membrane (although it's only had light use in the last 3 or 4 >> years). >> Is this some form of record, nearly 22 years from a single keyboard >> membrane? > Probably. > > Usage does not govern the life. The plastic gets brittle and cracks > is > moved. All the original QLs had their tails bent right back where > they > emerged. They usually break there. If the curve there is gentle > and > the QL is not opened, they should last for ever. Just fished the broken membrane out of the bin. You are right, it is brittle, bend the tails slightly and they crack.
>> After inserting the JS ROM I noticed that pin 1 was missing on the >> base (0000) JS ROM. The QL still seems to work OK, which implies >> it's >> probably an unused pin - anyone know? > Quite normal (8-)# I learn something about QLs every day! I'd intended to put the JS ROM into the MinisQL but it was only when I opened it up that I remembered that Sinclair ROM pairs have to be piggy-backed into the single Aurora rom socket. So the piggy-backed JM stays in that machine. So now I have a QL with QLEA ROM switcher board which switches between Minerva and the JS ROM just inserted, an Aurora/SGC with JM and SMSQ/E, and a QPC2 system, just about covers anything apart from Q60 for software testing perhaps. Strange to look back, I've never had a machine with JS ROM, apart from using a JS image in QLay and QemuLator. -- Dilwyn Jones -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.4/319 - Release Date: 19/04/2006 _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
