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Docs/RISC

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Archimedes World » AW-1996-02-Disc2.adf » !Z80Dem_Z80Demo
Filename: Docs/RISC
Read OK:
File size: 02AB bytes
Load address: 0000
Exec address: 0000
File contents
RISC OS 2
=========

Both emulators work on RISC OS 2, however when the
!Run file of an application is a Snapshot (as it might
be for a BBC script file or xzx multiload) an extra
copy of the appropriate emulator will be loaded even if
it is already loaded.

RISC OS 3.0
===========

This version of the operating system is not supported.
However, it is likely that both emulators will work.
3D Templates may have to be disabled.

RISC OS 3.1
===========

Under RISC OS 3.1 and above, 3D templates are supported
(if bit 0 of CMOS byte 140 "the 3D bit" is set) as is
solid dragging (if bit 1 of CMOS byte 28 is set)
"Mode 60" will not work on A4 portables without an
external monitor.
00000000  52 49 53 43 20 4f 53 20  32 0a 3d 3d 3d 3d 3d 3d  |RISC OS 2.======|
00000010  3d 3d 3d 0a 0a 42 6f 74  68 20 65 6d 75 6c 61 74  |===..Both emulat|
00000020  6f 72 73 20 77 6f 72 6b  20 6f 6e 20 52 49 53 43  |ors work on RISC|
00000030  20 4f 53 20 32 2c 20 68  6f 77 65 76 65 72 20 77  | OS 2, however w|
00000040  68 65 6e 20 74 68 65 0a  21 52 75 6e 20 66 69 6c  |hen the.!Run fil|
00000050  65 20 6f 66 20 61 6e 20  61 70 70 6c 69 63 61 74  |e of an applicat|
00000060  69 6f 6e 20 69 73 20 61  20 53 6e 61 70 73 68 6f  |ion is a Snapsho|
00000070  74 20 28 61 73 20 69 74  20 6d 69 67 68 74 0a 62  |t (as it might.b|
00000080  65 20 66 6f 72 20 61 20  42 42 43 20 73 63 72 69  |e for a BBC scri|
00000090  70 74 20 66 69 6c 65 20  6f 72 20 78 7a 78 20 6d  |pt file or xzx m|
000000a0  75 6c 74 69 6c 6f 61 64  29 20 61 6e 20 65 78 74  |ultiload) an ext|
000000b0  72 61 0a 63 6f 70 79 20  6f 66 20 74 68 65 20 61  |ra.copy of the a|
000000c0  70 70 72 6f 70 72 69 61  74 65 20 65 6d 75 6c 61  |ppropriate emula|
000000d0  74 6f 72 20 77 69 6c 6c  20 62 65 20 6c 6f 61 64  |tor will be load|
000000e0  65 64 20 65 76 65 6e 20  69 66 0a 69 74 20 69 73  |ed even if.it is|
000000f0  20 61 6c 72 65 61 64 79  20 6c 6f 61 64 65 64 2e  | already loaded.|
00000100  0a 0a 52 49 53 43 20 4f  53 20 33 2e 30 0a 3d 3d  |..RISC OS 3.0.==|
00000110  3d 3d 3d 3d 3d 3d 3d 3d  3d 0a 0a 54 68 69 73 20  |=========..This |
00000120  76 65 72 73 69 6f 6e 20  6f 66 20 74 68 65 20 6f  |version of the o|
00000130  70 65 72 61 74 69 6e 67  20 73 79 73 74 65 6d 20  |perating system |
00000140  69 73 20 6e 6f 74 20 73  75 70 70 6f 72 74 65 64  |is not supported|
00000150  2e 0a 48 6f 77 65 76 65  72 2c 20 69 74 20 69 73  |..However, it is|
00000160  20 6c 69 6b 65 6c 79 20  74 68 61 74 20 62 6f 74  | likely that bot|
00000170  68 20 65 6d 75 6c 61 74  6f 72 73 20 77 69 6c 6c  |h emulators will|
00000180  20 77 6f 72 6b 2e 0a 33  44 20 54 65 6d 70 6c 61  | work..3D Templa|
00000190  74 65 73 20 6d 61 79 20  68 61 76 65 20 74 6f 20  |tes may have to |
000001a0  62 65 20 64 69 73 61 62  6c 65 64 2e 0a 0a 52 49  |be disabled...RI|
000001b0  53 43 20 4f 53 20 33 2e  31 0a 3d 3d 3d 3d 3d 3d  |SC OS 3.1.======|
000001c0  3d 3d 3d 3d 3d 0a 0a 55  6e 64 65 72 20 52 49 53  |=====..Under RIS|
000001d0  43 20 4f 53 20 33 2e 31  20 61 6e 64 20 61 62 6f  |C OS 3.1 and abo|
000001e0  76 65 2c 20 33 44 20 74  65 6d 70 6c 61 74 65 73  |ve, 3D templates|
000001f0  20 61 72 65 20 73 75 70  70 6f 72 74 65 64 0a 28  | are supported.(|
00000200  69 66 20 62 69 74 20 30  20 6f 66 20 43 4d 4f 53  |if bit 0 of CMOS|
00000210  20 62 79 74 65 20 31 34  30 20 22 74 68 65 20 33  | byte 140 "the 3|
00000220  44 20 62 69 74 22 20 69  73 20 73 65 74 29 20 61  |D bit" is set) a|
00000230  73 20 69 73 0a 73 6f 6c  69 64 20 64 72 61 67 67  |s is.solid dragg|
00000240  69 6e 67 20 28 69 66 20  62 69 74 20 31 20 6f 66  |ing (if bit 1 of|
00000250  20 43 4d 4f 53 20 62 79  74 65 20 32 38 20 69 73  | CMOS byte 28 is|
00000260  20 73 65 74 29 0a 22 4d  6f 64 65 20 36 30 22 20  | set)."Mode 60" |
00000270  77 69 6c 6c 20 6e 6f 74  20 77 6f 72 6b 20 6f 6e  |will not work on|
00000280  20 41 34 20 70 6f 72 74  61 62 6c 65 73 20 77 69  | A4 portables wi|
00000290  74 68 6f 75 74 20 61 6e  0a 65 78 74 65 72 6e 61  |thout an.externa|
000002a0  6c 20 6d 6f 6e 69 74 6f  72 2e 0a                 |l monitor..|
000002ab