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- > Sam.A2Docn.External changes in Arthur 2: bugfix numbers refer to bugs.1-20
- (This file provided for information only: it does not affect documentation changes)
-
- Version 1.21
- ------------
-
- Oscli gives an error if a special field is found in the filing system
- prefix, e.g. *net#arf:setstation now gives an error.
-
- *Modules counter doesn't wrap at 256 (and neither does *ROMModules)
- (bugfix of 506)
-
- If a module fails to initialise, the module handler doesn't free incarnation
- node twice, and doesn't poo in the system heap. (bugfix)
-
- RdArgs SWI added, NoSuchSWI error made non-dynamic
-
-
-
- Version 1.22
- ------------
-
- Module death can now be recursive (bugfix #526)
- Module header fields checked for validity: word-aligned where appropriate,
- and within code length.
-
- CAO during startup set to 32M: allow overwriting of MOSROM modules.
- (bugfix #525)
-
- Module SWI lookup much faster: uses a hash table, rather than linear search
- of the module list.
-
- Added SWI OS_ReadRAMFsLimits
-
-
- Looks for keypad * pressed on reset; drops into supervisor. (see bug #511)
-
- T,Delete and Copy power-on added. R and T power-on clear the MOS CMOS, with
- different sync settings; DELETE and COPY clear all the CMOS.
-
- List, Type use RdArgs (File/A,TabExpand/S), and expand tabs into 8 spaces.
-
- SWI despatcher goes into caller's IRQ state; subsequent changes in next few
- versions to get the right IRQ state for individual SWIs.
-
-
- Version 1.23
- ------------
-
- Bugfix (#529) of Oscli: copes with buffer overflow in alias expansion
- parameter substitution.
-
-
- Version 1.24
- ------------
- New much faster IRQ despatch, along with new SWIs to claim
- and release "devices" (i.e. bits in IOC interrupt registers A and B,
- with the podule device the only one capable of having multiple owners).
-
- EnumerateROMModules call (and so Rommodules) bugfixed (#532).
-
- *RMFaster added.
-
- Interruptible (and also bug-fixed) heap manager incorporated.
-
- Version 1.25
- ------------
-
- Default IRQ2V clears the appropriate mask bit, returns. This is necessary for
- "devices" to have temporary drivers; anybody using the new IRQ SWIs must
- simply delink from the device vector when they have finished; subsequent
- IRQs will then either go to the next driver on the chain, or be disabled by
- the MOS.
-
- SWI ModHand: ExtendBlock will return V set if appropriate. (bugfix #553)
-
- Register dumping bugfixed (#552); now saves right registers for FIQ/IRQ.
-
- ValidateAddress fixed for screen memory. (bugfix #554)
-
- Version 1.26
- ------------
-
- MOS help messages tidied up.
- Redirection errors are handled better. (see bug #573)
-
- Alias terminators same as module command terminators. (see bug #571)
-
- MOS workspace rationalised; there's now an enormous amount of sharing.
-
- SWI not known error contains SWI number if it wasnt done under interrupt.
-
- Backspace in readline = delete
-
-
- Version 1.27
- ------------
-
- Background FIQ handling done; Service_ClaimFIQ and Service_ReleaseFIQ
- now come round immediately after Service_Reset, to set up the default handler.
-
- Stuart's HeapSort SWI added
- SWI ExitAndDie added
- SWIs to delink and relink application vectors added
-
- SWIs to allow user CAM-bashing; soft reset makes the application space
- contiguous again.
-
- ChangeEnvironment has a new reason code to allow setting of the application
- space size.
-
- Reset code masks CMOS; if top bit of CMOS gets set, used to be in
- a state where lots of memory was allocated, but *status said little
- was being requested.
-
-
- Version 1.30
- ------------
-
- New extensions to callback; can now ask to be put on a vector. The vector
- is also called if waiting to read a character; code on it is not allowed to
- generate errors, etc.
-
- ChangeDynamicArea refuses to do anything if called from an interrupt routine.
-
- Version 1.31
- ------------
-
- Supervisor printing of time taken dropped.
- System heap and cursor memory user-write-protected.
-
- Version 1.32
- ------------
-
- Bugfix of heap block extension.
- Dynamic SWI not known built in better buffer.
-
- Improvement of heap block extension; will extend into preceding block if
- possible.
-
- PrettyPrint bugfix: hard space after tab works.
-
- Writeability of CAO (for WIMP) via changeenv.
-
- Checks for keypad 0,1,2 on "power-on" resets, and sets monitor type from it.
-
- ReadBlockSize reason code added to heap manager.
-
- Defined R0-R3, R12 corruptible for IRQ processes.
-
-
- Version 1.34
- ------------
-
- Old style handler setters don't poo on r12 value (bugfix).
-
- ReadDefaultHandler SWI added; pass number from hdr.envnumbers, returns
- R1=address, R2=workspace, R3=buffer. 0 means not relevant.
-
- Version 1.37
- ------------
-
- Service_MemoryMoved offered after ChangeDynamic has moved stuff.
-
- Version 1.39
- ------------
-
- R0 in Service_Memory corrected. (bugfix)
-
- Monitortype bits expanded in status/configure.
-
- r1 uncorrupted in OS_Exit.
-
- Version 1.40
- -------------
-
- Help matches against module titles as a postscan, giving keywords recognised
- in the module.
-
- Version 1.41
- ------------
-
- ChangeDynamicArea rejects out of range area numbers (instead of crashing).
-
- SWI Module performs better when block extension has to try and extend the RMA.
-
- ROM unplug bits extended by using original Master frugal bits.
-
-
- Version 1.43
- -------------
-
- Default CMOS changes: NewADFSCMOS+2=1, DumpFormat=4.
- Prettyprint expanded to allow tokenisation.
-
- Version 1.44
- ------------
-
- DrawV added.
-
-
- Version 1.45
- ------------
-
- PrettyPrint allows you to specify the MOS dictionary by setting r1=0.
-
-
- Version 1.46
- ------------
-
- Made IRQ vector claim force release of any previous entries.
- SubstituteArgs:
- tbs r0 on entry => don't tack any unused part of the line on the end.
-
- New HeapSort which can shuffle data/build array pointers for you
-
- Help text compressed.
-
- BGet cache put into kernel.
-
-
- Version 1.47
- ------------
-
- Added EconetV
-
- Fixed module name match: adfs. no longer matches adfs
-
- Version 1.48
- ------------
-
- *Quit migrated: now a utility command, rather than a supervisor command.
- BPut cache migrated into kernel.
-