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- Date: 12-MAY-1987 12:22:43
- From: SYSKERMIT%vax1.central.lancaster.ac.uk@Cs.Ucl.AC.UK
- Subject: File BBCASM.ANN
-
- 65C02 Assembler 1.50
- --------------------
-
- This version is now available, and contains some extra user facilities and bug
- clearances. The main ones are:
-
- - New command line options have been added. They are:
-
- -Mn Switches to screen mode n before assembly starts
- -W Instructs the assembler to wait after outputting an error
- message until a key is pressed (actioned only if the listing
- is being sent to the screen)
- -G Instructs the Assembler not to pause at the end of assembly,
- but restart the calling language immediately. The default
- action is to pause unless the calling language is BASIC
-
- - The command line syntax has been extended, so that options can be set in
- a shorter way. Thus
-
- *ASSEMBLE SOURCE -B6 -L2 -W
-
- could be written as
-
- *ASSEMBLER SOURCE -B6L2W
-
-
- The "-O" flag for the object file is now optional, and the assembler will
- take the second parameter of the command as the object file name *unless*
- it begins with a "-". Thus
-
- *ASSEMBLE SOURCE -OBIN
-
- can be written
-
- *ASSEMBLE SOURCE BIN
-
-
- - If the assembler is fitted as the highest priority language, pressing
- CONTROL-BREAK or powering on will enter it in CLI mode. MOS commands can
- then be issued to change to another language if required.
-
- - A new service command *MODE n allows you to change screen mode to n even
- when in CLI mode and the BASIC MODE statement is not available.
-
- - The assembler will exit to the language ROM that called it, rather than
- restarting BASIC.
-
- - Bugs in the initialisation code have been cleared so the assembler can now
- be started from any language, and will start reliably on second processors
-
- - Control keys can be used to direct assembly actions while the assembly is
- under way. They are:
-
- f0..f3 Force list level to change to 0..3 . After pressing one of
- these keys, LST directives are processed but not actioned.
- CONTROL-L resets the list level to that set by the last
- LST directive encountered.
-
- CTRL-Q Outputs a report showing the number of the next line to be
- processed
-
- CTRL-W Reverses the current wait-after-error action
-
- CTRL-P Reverses the current state of the list-to-printer option
-
- CTRL-N Turns paged scroll mode on
-
- CTRL-O Turns paged scroll mode off
-
- CTRL-H Displays help information about key usage
-
- SPACE Pauses assembly until a key is pressed
-
- - Tab handling in the listing is extended, so that they are set at every 8
- character positions in the operand and comment fields.
-
- - A new directive SYSCLI allows MOS commands to be issued from the source
- during assembly.
-
- - The strings output by DISP and similar directives can include |M or |J
- to start a new line, or |G to ring the bell.
-
- - New directives CASC and CSTR plant "counted strings". They are similar to
- ASC and STR, but precede the string itself with a byte giving the length of
- the string. (On version 1.32 the ALEN directive could be used in a macro
- to do this, but control-characters and those with B7 set, selected as
- |X and ^X, would be counted as 2, rather than 1, character)
-
- - For symmetry, extra data planting directives have been added, so that
-
- DFB and DB plant bytes
- DFDB and DDB plant low-high words
- DFW and DW plant high-low words
- DFS and DS reserve space
-
- - A new directive DEFPARS allows defaults to be specified for macro
- parameters.
-
- - *HELP ASSEMBLER gives information on command usage.
-
- - The opcode mnemonic CLR has been added as a synonym of STZ, for
- compatibility with the mnemonics in the Basic assembler.
-
- - The character "\" can now be used to flag the start of comment
-
- - Hexadecimal constants can be begun with a "&" character (in fact, they
- always could - the 1.32 User Guide was wrong!)
-
- - Error reporting has been enhanced, so that where appropriate the message
- will indicate the position in the line the error occurred.
-
- - Screen output in mode 0 now correctly uses a width of 80 bytes, rather than
- 40.
-
- - Saved Wordwise files can be input directly as source, providing they
- contain no embedded commands. The Wordwise TAB character (shown as a right-
- arrow on screen) is accepted as a "real" TAB.
-
- Full details of the Assembler are contained in the User Guide, which has been
- expanded with much greater descriptive detail.
-
- ----------------------------------------------
-
- From: SYSKERMIT@UK.AC.LANCS.VAX1 "UK Kermit Distribution"
- Date: 24-FEB-1987 09:32
- Subj: Update to Lancaster 65C02 Assembler
-
- Version 1.52 of the Lancaster 65C02 Assembler is now available. This is a bug-
- fix release, and contains no extra user facilities. Problems fixed are:
-
- - Immediate operands can be negative numbers. Thus expressions such as
- LDA #-1
- now work, planting, in this case, A9 FF as you would expect. The expression
- will still be rejected if loss of the most significant byte would cause a
- change of sign.
-
- - The 65C02-only mnemonics INA and DEA now produce the correct opcodes (Note
- that this problem was already fixed in versiin 1.5T as broadcast by BBC
- Telesoftware)
-
- - An EXEC file can be used to provide the replies to the QUERY directive. In
- 1.50 the replies were taken as keypresses and were ignored.
-
- - The symbol table listing is not corrupted if SPACE is pressed while it is
- being generated
-
- - JSR to a zero-page address is correctly assembled. In 1.50 it was treated as
- an invalid addressing mode.
-
- - DS with an operand of zero now leaves a zero-length gap rather than a 64K
- gap
-
- - Repeat counts > 255 in DFB, etc, now work correctly
-