Adrian Ives wrote, on 20/Apr/11 13:02 | Apr20:
I'm a little bit surprised by your comment that I am misusing slave blocks.
Obviously the authors of the original QUBIDE driver, on which Ser-USB was
based, were also misusing them!!! Like them, I use the slave blocks to keep
mirrors of the data on the drive in memory to save having to re-read it.
(Which, I think is what you then go on to say) In fact, I have barely
changed the slave block handling code from QUBIDE - I'm certainly not using
them for any other purpose.
Sorry, but I don't understand what you mean by the statement "The driver
doesn't even get told about that." QDOS calls the Forced Slaving vector and
tells the driver to dispose of a slave block ... and that's where I have had
a lot of problems.
..... but the qubide driver is not original. Phil Borman based it on
the Rebel disk code. Qubide got away with it, I presume, as it cannot
be run on a non-expanded QL, so there was plenty of memory for slave
blocks.
Tony
--
QBBS (QL fido BBS 2:257/67) +44(0)1442-828255
t...@firshman.co.uk http://firshman.co.uk
Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman
TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG
_______________________________________________
QL-Users Mailing List
http://www.q-v-d.demon.co.uk/smsqe.htm
