Location
| Function
|
0
| Econet station number (not directly configurable)
|
1
| Econet file server station id (0 name configured)
|
2
| Econet file server net number (or first character of name - rest in bytes 158 - 172)
|
3
| Econet printer server station id (0 name configured)
|
4
| Econet printer server net number (or first character of name - rest in bytes 153 - 157)
|
5
| Default filing system number
|
6 - 7
| *Unplug for ROM modules: 16 bits for up to 16 modules
|
8
| Reserved for Acorn use
|
9 †
| *Unplug for ROM modules: 8 bits for up to 8 modules
|
10
| Screen info:
|
| Bits 0 - 3
| reserved for Acorn use
|
Bit 4
| TV interlace (first *TV parameter)
|
Bits 5 - 7
| TV vertical adjust (signed three-bit number)
|
11
| Misc configuration:
|
| Bits 0 - 2 ‡
| ADFS drive
|
Bits 3 - 5
| 1 SHCAPS_ 2 NOCAPS_ 4 Caps
|
Bit 6
| 0 DIR_ 1 NoDir
|
Bit 7
| reserved for Acorn use
|
12
| Keyboard auto-repeat delay
|
13
| Keyboard auto-repeat rate
|
14
| Printer ignore character
|
15
| Printer information:
|
| Bit 0
| reserved for Acorn use
|
Bit 1
| 0 IGNORE_ 1 NoIgnore
|
Bits 2 - 4
| serial baud rate (0 75_..._7 19200)
|
Bits 5 - 7
| printer type
|
16
| Miscellaneous flags:
|
| Bit 0
| reserved for Acorn use
|
Bit 1
| 0 QUIET_ 1 Loud
|
Bit 2
| reserved for Acorn use
|
Bit 3
| 0 SCROLL_ 1 NoScroll
|
Bit 4
| 0 NOBOOT_ 1 Boot
|
Bits 5 - 7
| serial data format (0...7)
|
17
| NetFiler:
|
| Bit 0
| FS list sorting mode: 0 BY NAME_ 1 by number
|
Bit 1
| library type: 0 DEFAULT LIBRARY RETURNED BY FILE SERVER_ 1 $.ArthurLib
|
Bits 2 - 3
| FS list display mode: 0 LARGE ICONS_ 1 SMALL ICONS_ 2 full info, 3 reserved
|
Bits 4 - 7
| reserved for Acorn use
|
18 - 19
| *Unplug for ROM modules: 16 bits for up to 16 modules
|
20 - 21
| *Unplug for extension ROM modules: 16 bits for up to 16 modules
|
22
| WimpDoubleClickMove limit
|
23
| WimpAutoMenuDelay time
|
24
| Territory
|
25
| Printer buffer size
|
26
| IDE disc auto-spindown delay
|
27
| Wimp menu drag delay
|
28
| FileSwitch options:
|
| Bit 0
| truncate names: 0 GIVE ERROR_ 1 truncate no error
|
Bit 1
| DragASprite and DragAnObject: 0 DON'T USE_ 1 use
|
Bit 2
| interactive file copy: 0 USE_ 1 don't use
|
Bit 3
| Wimp's use of dither patterns on desktop: 0 DON'T USE_ 1 use
|
Bit 4 †‡
| type of click on toggle size icon that doesn't obscure icon bar: 0 CLICK_ 1 Shift-click
|
Bit 5
| reserved for Acorn use
|
Bits 6 - 7
| state of last shutdown: 0 DON'T CARE_ 1 FAILED_ 2 DUE TO POWER LOSS_ 3 undefined
|
29 ‡
| Mouse type:
|
| 0 standard quadrature mouse,
|
1 Microsoft compatible serial mouse,
|
2 Mouse Systems Corporation compatible serial mouse,
|
3 PS/2 compatible serial mouse †,
|
4 - 255 reserved for Acorn use
|
30 - 45
| Reserved for the user
|
46 - 59
| Reserved for applications
|
60 - 79 ‡
| Reserved for expansion card use
|
80
| Freeway net number in Acorn Access, or reserved for RISC iX
|
81
| &0F for Access to prevent RISC iX booting, or reserved for RISC iX
|
82 - 105
| ShareFS disc names in Acorn Access, or reserved for RISC iX
|
106
| ADFSFiler disc sharing for Acorn Access:
|
| Bit 0
| share drive 4 if set
|
Bit 1
| protect drive 4 if set
|
Bit 2
| share drive 5 if set
|
Bit 3
| protect drive 5 if set
|
Bit 4
| share drive 6 if set
|
Bit 5
| protect drive 6 if set
|
Bit 6
| share drive 7 if set
|
Bit 7
| protect drive 7 if set
|
Or reserved for RISC iX
|
107 - 111
| Reserved for RISC iX
|
112 - 127
| Reserved for expansion card use
|
128 - 129
| Current year
|
130 - 131 †
| *Unplug for ROM modules: 16 bits for up to 16 modules
|
132
| DumpFormat, 16 bit sound control and quality:
|
| Bits 0 - 1
| control character print control:
|
0 print in GSTrans format,
|
1 print as a dot,
|
2 print decimal inside angle brackets,
|
3 print hex inside angle brackets
|
Bit 2
| treat top-bit-set characters as valid if set
|
Bit 3
| AND character with &7F in *Dump
|
Bit 4
| treat TAB as print 8 spaces
|
Bits 5 - 6
| 16 bit sound control:
|
0 STANDARD -law sound (ie no 16 bit sound output)
|
1 DAC clock is slave, 11.2896MHz external clock, standard VIDC20 or 44.1kHz×4/(4...45) rates (as on ESP card)
|
2 DAC clock is slave, no external clock, standard VIDC20 rates only
|
3 DAC clock is master, external clock, suitable sound clock driver installed
|
Bit 7
| 16 bit sound quality:
|
0 use specified sample rate
|
1 perform sample interpolation to keep sample rate over 25kHz
|
133
| Sync, monitor type, some mode information:
|
| Bits 0, 7
| 0 VERTICAL SYNC_ 1 COMPOSITE SYNC_ 3 auto sync)
|
Bit 1 †
| 0 ENABLE LOADMODEFILE IN !BOOT_ 1 disable LoadModeFile in !Boot
|
Bits 2 - 6
| monitor type: 0 0_ 1 1_ ..._ 31 auto
|
134
| FontSize in units of 4K
|
135
| Number of ADFS drives:
|
| Bits 0 - 2
| floppy disc drives
|
Bits 3 - 5 ‡
| no longer used (was ST506) - reserved for Acorn use
|
Bits 6 - 7
| IDE disc drives
|
136
| ADFS floppy disc drive step rates:
|
| Bits 0 - 1
| floppy disc drive 0
|
Bits 2 - 3
| floppy disc drive 1
|
Bits 4 - 5
| floppy disc drive 2
|
Bits 6 - 7
| floppy disc drive 3
|
137
| ADFSbuffers
|
138
| CDFS number of discs and buffer size:
|
| Bits 0 - 4
| number of CD-ROM drives
|
Bits 5 - 7
| buffer size: 0 0K_ 1 8K_ 2 16K_ 3 32K_ 4 64K_ 5 128K_ 6 256K_ 7 512K
|
139
| TimeZone in 15min offsets from UTC, stored as signed 2's complement number (RISC OS 3 version 3.10 onwards)
|
140
| Desktop features:
|
| Bit 0
| 3D: 0 2D LOOK_ 1 3D look
|
Bits 1 - 4 ‡
| desktop font setting:
|
0 use Wimp$Font... variables,
|
1 use System font
|
2 - 15 use font from ResourceFS
|
Bits 5 - 6
| reserved for Acorn use
|
Bit 7 ‡
| window background tiling: 0 USE TILE_1_ 1 not tiled (i.e. grey 1)
|
141 - 142 †‡
| *Unplug for ROM modules: 16 bits for up to 16 modules
|
143
| Screen size, in pages
|
144
| RAM disc size, in pages
|
145
| System heap size to add after initialisation, in pages
|
146
| RMA size to add after initialisation, in pages
|
147
| Sprite size, in pages
|
148
| SoundDefault parameters:
|
| Bits 0 - 3
| channel 0 default voice
|
Bits 4 - 6
| loudness (0 - 7 &01, &13, &25, &37, &49, &5B, &6D, &7F)
|
Bit 7
| loudspeaker enable, if hardware supports it
|
149 - 152
| Allocated to BASIC Editor
|
153 - 157
| Printer server name characters 2 - 6 (character 1 at location 4)
|
158 - 172
| File server name characters 2 - 16 (character 1 at location 2)
|
173 - 176
| *Unplug for ROM modules: 32 bits for up to 32 modules
|
177 - 184
| *Unplug for expansion card modules: 8 × 8 bits for up to 8 modules per card
|
185
| Configured language
|
186
| Configured country
|
187
| *Unplug for network card modules: 8 bits for up to 8 modules
|
188
| Miscellaneous:
|
| Bits 0 - 1
| ROMFS Opt 4 state
|
Bit 2
| cache icon enable state: 0 NO CACHE ICON STATE_ 1 caches icon
|
Bits 3 - 5
| screen blanker time: 0 OFF_ 1 30S_ 2 1MIN_ 3 2MINS_ 4 5MINS_ 5 10MINS_ 6 15MINS_ 7 30mins
|
Bit 6
| screen blanker/Wrch interaction: 0 IGNORE WRCH_ 1 Wrch unblanks screen
|
Bit 7
| hardware test disable: 0 FULL TESTS_ 1 disable long tests at power-up
|
189 - 192
| Winchester size
|
193
| Protection state for immediate Econet commands:
|
| Bit 0
| Peek
|
Bit 1
| Poke
|
Bit 2
| JSR
|
Bit 3
| User RPC
|
Bit 4
| OS RPC
|
Bit 5
| Halt
|
Bit 6
| GetRegs
|
Bit 7
| reserved for Acorn use
|
194
| Mouse multiplier
|
195
| Miscellaneous:
|
| Bit 0
| AUN BootNet: 0 DISABLED_ 1 enabled
|
Bit 1
| AUN dynamic station numbering: 0 DISABLED_ 1 enabled
|
Bit 2
| type of last reset: 0 ORDINARY_ 1 CMOS reset
|
Bit 3
| power saving: 0 DISABLED_ 1 enabled
|
Bit 4
| mode and wimp mode: 0 USE BYTE 196_ 1 auto
|
Bit 5
| cache enable for ARM: 0 ENABLED_ 1 disabled
|
Bit 6
| broadcast loader enable: 0 ENABLED_ 1 disabled
|
Bit 7
| colour hourglass enable: 0 DISABLED_ 1 enabled
|
196
| Mode and Wimp mode
|
197
| WimpFlags
|
198
| Desktop state:
|
| Bits 0, 1
| Filer display mode: 0 LARGE ICONS_ 1 SMALL ICONS_ 2 full info, 3 reserved
|
Bits 2, 3
| Filer sorting mode: 0 SORT BY NAME_ 1 SORT BY TYPE_ 2 SORT BY SIZE_ 3 sort by date
|
Bit 4
| force option (1 force)
|
Bit 5
| confirm option (1 confirm)
|
Bit 6
| verbose option (1 verbose)
|
Bit 7
| newer option (1 newer)
|
199
| ADFS directory cache size
|
200 - 205
| FontMax, FontMax1 - FontMax5
|
206 - 207
| Reserved for Acorn use
|
208
| SCSIFS flags
|
| Bits 0 - 2
| number of discs (0 - 4)
|
Bits 3 - 5
| default drive - 4
|
Bits 6 - 7
| reserved
|
209
| SCSIFS file cache buffers (must be 0)
|
210
| SCSIFS directory cache size
|
211 - 214
| SCSIFS disc sizes (their maps' sizes / 256)
|
215 - 216
| Reserved for Acorn use
|
217 - 219
| *Unplug for ROM modules: 24 bits for up to 24 modules
|
220
| Alarm and time byte
|
| Bits 0 - 2
| format state:
|
0 illegal (!Alarm checks for first run),
|
1 analogue with seconds,
|
2 analogue without seconds,
|
3 HH:MM,
|
4 format is '%24:%mi:%se',
|
5 format is '%z12:%mi:%se %am %zd %zmn %yr',
|
6 & 7 reserved
|
Bit 3
| deletion: 0 DO NOT CONFIRM_ 1 confirm
|
Bit 4
| auto save: 0 NO AUTO SAVE_ 1 auto save
|
Bit 5
| 5 day weeks: 0 DISABLED_ 1 enabled
|
Bit 6
| alarm noise: 0 NOT SILENT_ 1 silent
|
Bit 7
| Daylight Saving Time: 0 NORMAL TIME_ 1 Daylight Saving Time (DST)
|
221
| WimpDragDelay time
|
222
| WimpDragMove limit
|
223
| WimpDoubleClickDelay time
|
224 - 229
| Local print server's name, stored by printer server software, or reserved for RISC iX
|
230 †
| LCD panel brightness and contrast, or reserved for RISC iX (was solely reserved for RISC iX under RISC OS 3.5)
|
231 †‡
| *Unplug for ROM modules: 8 bits for up to 8 modules
|
232 ‡
| Reserved for Acorn use
|
233 - 238 ‡
| FSLock
|
239
| CMOS RAM checksum
|