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- 10/03/94
- Disabling Relocatable Modules
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- In some situations, such as in a classroom, it may be considered desirable to
- disable some of the applications and relocatable modules which are an integral
- part of RISC OS.
-
- Modules which are temporarily disabled will remain so until the machine is
- switched off. Modules which are "permanently" disabled (by *unplug) will
- remain so until the machine is reset via a Delete-Power On.
-
- The routines for disabling relocatable modules may be inserted at the start of
- the !Boot or !ArmBoot file which is to be run when the machine is switched on
- or reset.
-
- !Configure can be temporarily disabled using:
-
- *RMKill !Configure
-
- and can be unplugged using:
-
- RMReinit !Configure | Put the module back if it is already unplugged
- Unplug !Configure | Now take it out.
-
- With Ethernet based networks, it is recommended that the Broadcast Loader is
- disabled. This may be achieved using:
-
- SetEval BLoader$Module 1
- RMEnsure BroadcastLoader 0 SetEval BLoader$Module 0
- If BLoader$Module Then RMEnsure EconetA 0 SetEval BLoader$Module <BLoader$Module>+1
- If BLoader$Module=2 Then Unplug BroadcastLoader
- Unset BLoader$Module
-
- The script works by setting a flag, BLoader$Module, which is then altered
- according to a series of tests.
-
- Taking this sequence a line at a time:
-
- SetEval BLoader$Module 1
- | Set the flag to 1
-
- RMEnsure BroadcastLoader 0 SetEval BLoader$Module 0
- | Check if the Module is there. If it is NOT then
- | set the flag to 0
-
- If BLoader$Module Then RMEnsure EconetA 0 SetEval BLoader$Module <BLoader$Module>+1
- |If the module is there, check if Econet is there too. If it is, increment the
- |flag.
-
- This gives us the situation that, if the Broadcast Loader is already disabled,
- the flag is set to 0. If the Loader is enabled and the Econet module is
- enabled, the flag is set to 1. If the Loader is enabled and Econet is software
- unplugged, the flag is set to 2.
-
- If BLoader$Module=2 Then Unplug BroadcastLoader
- |If the flag is set to 2, disable the Broadcast Loader
-
- Unset BLoader$Module
- | Remove the system variable used for the flag from memory
-
-
- A5000 External Floppy Drives and RISC OS 3.1
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- It has been found that some 5.25" floppy drives connected to A5000s have
- stopped working when the machines are upgraded to RISC OS 3.1.
-
- The solution to the problem is to move link 21 on the main PCB from position
- 1-2 to 2-3.
-
- An Application Note, which can be obtained from Acorn Approved Dealers and
- Education Centres, has been written to detail further configuration procedures
- for installing external floppy drives.
-
- New Products and Upgrades
- ~~~~~~~~~~~~~~~~~~~~~~~~~
- !Printers version 1.22
-
- !PhotoView, Acorn's PhotoCD Support System incorporating CDFS 2.21: £34.99 ex
- VAT
-
- These are available from Acorn Approved Dealers and Education Centres.
-
- Level 4 Release 3, including Acorn Application Accelerator: £99 ex VAT, incl.
- p&p
-
- This is available from:
-
- Vector Services
- 13 Dennington Road
- Wellingborough
- Northamptonshire NN8 2RL
-
- Cheques to be made payable to "Acorn Direct."
-
-