MASTER CMOS RAM RESET After the Master series have had either their batteries or EEPROM replaced it will normally be necessary to perform some sort of re configuration. This document describes all the configuration options available and what the default settings are when the computer is supplied by Acorn. *CONFIGURE Baud <0 - 8> Description : Sets the speed of the RS232 serial interface. Options : 0 9600 1 75 2 150 3 300 4 1200 5 2400 6 4800 7 9600 8 12000 Default : 4 (1200) *CONFIGURE Caps / NoCaps Description : Sets the keyboard caps lock. Options : Caps NoCaps Default : Caps *CONFIGURE Data <0 - 7> Description : Specifies the data format used by the RS232 interface according to the specified value. Options : Value Word Length Parity Stop Bits 0 7 even 2 1 7 odd 2 2 7 even 1 3 7 odd 1 4 8 none 2 5 8 none 1 6 8 even 1 7 8 odd 1 Default : 4 *CONFIGURE Delay <0 - 255> Description : Sets the keyboard auto-repeat delay to the specified number of hundredths of a second. Default : 30 *CONFIGURE FDrive <0 - 7> Description : The computer is fitted with either a WD1770 or a WD1772 disc controller. FDrive defines the step time and, for ADFS, use of precompensation. Options : Value track to track precompensation step time (ADFS ADFS only) WD1770 WD1772 0 or 4 6ms 6ms yes 1 or 5 6ms 6ms no 2 or 6 30ms 3ms yes 3 or 7 30ms 3ms no Most drives require 6ms step time. Older drives may need the 30ms step time; modern drives may be able to operate at 3ms - consult your disc drive documentation. Default : 0 *CONFIGURE File <0 - 15) Description : Defines the default filing system by means of its ROM socket number. Options : Standard Master 128. ROM F TERMINAL 01 ROM E VIEW 04 ROM D Acorn ADFS 50 ROM C BASIC 04 ROM B Edit 01 ROM A ViewSheet 02 ROM 9 DFS 79 ROM 8 ? ROM 7 ? ROM 6 ? ROM 5 ? ROM 4 ? ROM 3 ? ROM 2 ? ROM 1 ? ROM 0 ? The ROM numbers A - F are in HEX and correspond to Decimal 10 - 15. Default : ADFS = &D (14) *CONFIGURE Hard / Floppy Description : If the system has both floppy disc(s) and a Winchester disc connected, *CONFIGURE FLOPPY causes ADFS to initialise with drive 4 (floppy discs) selected. If the system has both floppy disc(s) and a Winchester disc connected, *CONFIGURE HARD causes ADFS to initialise with drive 0 (Winchester) selected. Default : Floppy *CONFIGURE Ignore <0 - 255> Description : Defines the 'printer ignore character' (ie the character which is not to be directed to the printer), by means of its ASCII code. If the character code is omitted, all characters are sent to the printer when enabled. Default : 0 *CONFIGURE InTube / ExTube Description : Causes either an internal or external TUBE to be selected in preference to the other. Options : InTube ExTube Default : InTube *CONFIGURE Lang <0 -15> Description : Defines the default language by means of its ROM socket number. Options : Standard Master 128. ROM F TERMINAL 01 ROM E VIEW 04 ROM D Acorn ADFS 50 ROM C BASIC 04 ROM B Edit 01 ROM A ViewSheet 02 ROM 9 DFS 79 ROM 8 ? ROM 7 ? ROM 6 ? ROM 5 ? ROM 4 ? ROM 3 ? ROM 2 ? ROM 1 ? ROM 0 ? The ROM numbers A - F are in HEX and correspond to Decimal 10 - 15. Default : BASIC = &C (12) *CONFIGURE Quiet / Loud Description : Sets the BELL (CTRL G) Volume. Options : Quiet Loud Default : Quiet *CONFIGURE Mode <0 - 7> or <128 - 135> Description : Defines the default MODE setting. MODEs <0 - 7> non Shadow screen modes. MODEs <128 - 135> Shadow screen modes. Options : Mode Text Rows Text Columns Character Graphic Pixels Colours Set 0 (128) 32 80 ASCII 640 x 256 2 1 (129) 32 40 ASCII 320 x 256 4 2 (130) 32 20 ASCII 160 x 256 16 3 (131) 25 80 ASCII - 2 4 (132) 32 40 ASCII 320 X 256 2 5 (133) 32 20 ASCII 160 X 256 4 6 (134) 25 40 ASCII - 2 7 (135) 25 40 TELETEXT - - DEFAULT : 7 *CONFIGURE BOOT / NOBOOT Description : Set the Boot action of the machine on switch on. Boot tells the machine to attempt to run the !Boot file on a disc on switch-on or CTRL BREAK. NOBOOT reverses the action of BOOT. Options : BOOT NOBOOT Default : NOBOOT *CONFIGURE NODIR / DIR Description : Causes ADFS to initialise with a directory selected (either the root or, if ADFS has been used since power-on, the previously selected directory). Options : DIR NODIR Default : NODIR *CONFIGURE NOSCROLL / SCROLL Description : NOSCROLL enables the scroll protect option (ie prevents hard screen scrolling if a character is placed in the last character position of the bottom screen line, depending on the current mode. Options : SCROLL NOSCROLL Default : SCROLL *CONFIGURE Print <0 - 4> Description : Defines the printer output port according to the value specified. Options : 0 Sink (No output printed) 1 Centronics (Parallel) port 2 RS232 (Serial) port 3 user printer driver 4 Econet (network printer) port Default : Sink (0) *CONFIGURE Repeat <0 - 255> Description : Sets the keyboard repeat rate to the specified number of hundredths of a second. Default : 8 *CONFIGURE Tube Description : Check for the presence of an internal or external co-processor and, if fitted, take the action specified by either the INTUBE or EXTUBE option. Options : TUBE NOTUBE Default : NOTUBE *CONFIGURE TV <0 - 255>,[<0 - 1>] Description : Alter the vertical screen alignment and set or reset the interlace option. The first parameter is interpreted as a signed byte ie. 1 means a movement of 1 line up and 255 (-1) means a movement of one line down. If the first parameter is 0 no adjustment is made to the vertical screen alignment. If the second parameter is 0 the screen interlace option is switched ON; if it is 1, the screen interlace is switched OFF. If the second parameter is omitted the value zero is assumed. Default : 0,1 The following options only apply to systems fitted with the ANFS ( Advanced Network Filing System) ROM. *CONFIGURE FS or Description : Used to selected the default fileserver for logging onto. Options : FS Number FS Name eg. *CONFIGURE FS 0.254 or *CONFIGURE FS TecSupport Default : 0.254 *CONFIGURE PS or Description : Used to selected the default network printer server. Options : PS Number PS Name *CONFIGURE FS 0.235 or *CONFIGURE FS Laser Default : 0.235 *CONFIGURE SPACE / NOSPACE Description : On the BBC Master Series pages &B00 and &C00 are allocated as workspace to be used by the Econet filing system. On previous models these areas were used as buffers. Some existing software may try to use these areas and conflict with the operating system use of the space. The Econet system can be configured to claim other areas thus leaving pages &B00 and &C00 free for use with any application programs which are found to make inappropriate use of these areas. Options : SPACE - Pages claimed for transient commands. Effect on PAGE, OSHWM rises by &200. NOSPACE - PAGEs are not claimed and therefore the OSHWM is not increased. Default : NOSPACE The following option only applies to BBC Master Compact and to BBC Master 128's that are fitted with the optional System ROM (3.50). *CONFIGURE View Setup Description : Define how View should start up. Options : F - Format mode is on when View starts (an F will appear at the top left of the screen) J - Justify mode is on when View starts (a J will appear at the top left of the screen) I - Insert mode is on when View starts (an I will appear at the top left of the screen) Default : FJ General Information The *CONFIGURE commands must always be followed by a CTRL BREAK to initialise the settings in the machine. It is possible to use Edit supplied with the BBC Master to create a standard file which contains all the *CONFIGURE options which could be used to re configure the machine in one go by using the *EXEC Command. The Master Compact EEPROM has a limited life of 10,000 write operations. The chip is easily replaced when this limit is reached. Acorn recommends that in the BBC Master the batteries are replaced every 12 months. If ROMs appear in the ROM table as being unplugged it is possible to re- insert them using the command *INSERT followed by the ROM Socket number eg. *INSERT 13 (The ROM table is displayed by using the *ROMS command. Note that after using the *INSERT command, the ROM will not be available until after the next hard reset, ie CTRL/BREAK or power-up. Cluke )