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!6502Em/Docs/ROMs

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 » Zipped Apps » 6502em
Filename: !6502Em/Docs/ROMs
Read OK:
File size: 0ADE bytes
Load address: 0000
Exec address: 0000
Duplicates

There is 1 duplicate copy of this file in the archive:

File contents
6502Em: The ROMs
================

6502Em will not run without at least one set of ROMs.
The following versions of the OS are supported:

OS 1.2
------

This was the final release of the OS for the BBC Model B
files needed:
!6502Em.ROMs.OS1,2             The Operating System itself
!6502Em.ROMs.BASICII           The BBC BASIC interpreter

OS 3.2
------

This was the first release (of two) of the OS for the BBC Master
files needed:
!6502Em.ROMs.M128.OS3,2        The Operating System itself
!6502Em.ROMs.M128.Terminal     Terminal 1.20 ROM, plus more OS
!6502Em.ROMs.M128.View         View 3.0 ROM, plus a little OS
(!6502Em.ROMs.M128.ADFS1,50     ADFS, not currently loaded by emulator)
!6502Em.ROMs.M128.BASICIV84    The BBC BASIC interpreter
!6502Em.ROMs.M128.Edit1,00     Edit ROM (
!6502Em.ROMs.M128.ViewSheet    Viewsheet 1.0 ROM
!6502Em.ROMs.M128.DFS2,24      DFS ROM - provides *SRLOAD etc

OS 3.5
------

This was the second release (of two) of the OS for the BBC Master
files needed:
!6502Em.ROMs.M128.OS3,5        The Operating System itself
!6502Em.ROMs.M128.Terminal35   Terminal 1.20 ROM, plus more OS
!6502Em.ROMs.M128.ViewB3,3     View 3.3 ROM
(!6502Em.ROMs.M128.ADFS2,03     ADFS, not currently loaded by emulator)
!6502Em.ROMs.M128.BASIC4r32    The BBC BASIC interpreter
!6502Em.ROMs.M128.Edit1,50r    Edit ROM
!6502Em.ROMs.M128.ViewSh1,01   Viewsheet 1.01 ROM
!6502Em.ROMs.M128.DFS2,45      DFS ROM, plus a little OS

Some of the changes from 3.2:
Startup message is "ACORN MOS" not "Acorn MOS"
Sideways ROMs can now be automatically relocated over the tube (BASIC, Edit)
Sideways RAM Utilities now in kernel
ADFS *Format, *Verify and *Backup now in ROM (decoded by MOS)
CLOSE#0 and EXT#= now work under DFS
Larger range of step values available (*CONFIGURE FDRIVE)
Support for international characters in filing system names
Area move, ellipse and sound code is now in DFS ROM
A few extra CMOS options
The ROM between &FC00 AND &FF00 now contains code

OS 5.1
------

This was the only release of the OS for the Master Compact
files needed:
!6502Em.ROMs.Compact.OS5,1     The Operating System itself
!6502Em.ROMs.Compact.Utils     OS * Commands (including *SRLOAD)
!6502Em.ROMs.Compact.BASICIV86 The BBC BASIC interpreter
(!6502Em.ROMs.Compact.ADFS2,10  ADFS, not currently loaded by emulator)

OS 1.0
------

This was the only release of the OS for the Acorn Electron
files needed:
!6502Em.ROMs.Electron          The Operating System itself
!6502Em.ROMs.BASICII           The BBC BASIC interpreter

Historical Note
===============

OS 2.x was for the BBC B+
OS 3.5 was the second release for the Master 128
OS 4.x was for the Master ET (Econet Terminal)

Previous releases for the original BBC were 0.10 and 1.00
The Electron's OS was, confusingly, also 1.00
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000001c0  4d 31 32 38 2e 4f 53 33  2c 32 20 20 20 20 20 20  |M128.OS3,2      |
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00000330  74 20 20 20 20 56 69 65  77 73 68 65 65 74 20 31  |t    Viewsheet 1|
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00000380  20 65 74 63 0a 0a 4f 53  20 33 2e 35 0a 2d 2d 2d  | etc..OS 3.5.---|
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000003a0  65 20 73 65 63 6f 6e 64  20 72 65 6c 65 61 73 65  |e second release|
000003b0  20 28 6f 66 20 74 77 6f  29 20 6f 66 20 74 68 65  | (of two) of the|
000003c0  20 4f 53 20 66 6f 72 20  74 68 65 20 42 42 43 20  | OS for the BBC |
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000003f0  73 2e 4d 31 32 38 2e 4f  53 33 2c 35 20 20 20 20  |s.M128.OS3,5    |
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00000420  21 36 35 30 32 45 6d 2e  52 4f 4d 73 2e 4d 31 32  |!6502Em.ROMs.M12|
00000430  38 2e 54 65 72 6d 69 6e  61 6c 33 35 20 20 20 54  |8.Terminal35   T|
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00000450  2c 20 70 6c 75 73 20 6d  6f 72 65 20 4f 53 0a 21  |, plus more OS.!|
00000460  36 35 30 32 45 6d 2e 52  4f 4d 73 2e 4d 31 32 38  |6502Em.ROMs.M128|
00000470  2e 56 69 65 77 42 33 2c  33 20 20 20 20 20 56 69  |.ViewB3,3     Vi|
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00000570  4d 73 2e 4d 31 32 38 2e  44 46 53 32 2c 34 35 20  |Ms.M128.DFS2,45 |
00000580  20 20 20 20 20 44 46 53  20 52 4f 4d 2c 20 70 6c  |     DFS ROM, pl|
00000590  75 73 20 61 20 6c 69 74  74 6c 65 20 4f 53 0a 0a  |us a little OS..|
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00000750  6f 75 6e 64 20 63 6f 64  65 20 69 73 20 6e 6f 77  |ound code is now|
00000760  20 69 6e 20 44 46 53 20  52 4f 4d 0a 41 20 66 65  | in DFS ROM.A fe|
00000770  77 20 65 78 74 72 61 20  43 4d 4f 53 20 6f 70 74  |w extra CMOS opt|
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000007a0  46 46 30 30 20 6e 6f 77  20 63 6f 6e 74 61 69 6e  |FF00 now contain|
000007b0  73 20 63 6f 64 65 0a 0a  4f 53 20 35 2e 31 0a 2d  |s code..OS 5.1.-|
000007c0  2d 2d 2d 2d 2d 0a 0a 54  68 69 73 20 77 61 73 20  |-----..This was |
000007d0  74 68 65 20 6f 6e 6c 79  20 72 65 6c 65 61 73 65  |the only release|
000007e0  20 6f 66 20 74 68 65 20  4f 53 20 66 6f 72 20 74  | of the OS for t|
000007f0  68 65 20 4d 61 73 74 65  72 20 43 6f 6d 70 61 63  |he Master Compac|
00000800  74 0a 66 69 6c 65 73 20  6e 65 65 64 65 64 3a 0a  |t.files needed:.|
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00000840  74 65 6d 20 69 74 73 65  6c 66 0a 21 36 35 30 32  |tem itself.!6502|
00000850  45 6d 2e 52 4f 4d 73 2e  43 6f 6d 70 61 63 74 2e  |Em.ROMs.Compact.|
00000860  55 74 69 6c 73 20 20 20  20 20 4f 53 20 2a 20 43  |Utils     OS * C|
00000870  6f 6d 6d 61 6e 64 73 20  28 69 6e 63 6c 75 64 69  |ommands (includi|
00000880  6e 67 20 2a 53 52 4c 4f  41 44 29 0a 21 36 35 30  |ng *SRLOAD).!650|
00000890  32 45 6d 2e 52 4f 4d 73  2e 43 6f 6d 70 61 63 74  |2Em.ROMs.Compact|
000008a0  2e 42 41 53 49 43 49 56  38 36 20 54 68 65 20 42  |.BASICIV86 The B|
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00000910  20 31 2e 30 0a 2d 2d 2d  2d 2d 2d 0a 0a 54 68 69  | 1.0.------..Thi|
00000920  73 20 77 61 73 20 74 68  65 20 6f 6e 6c 79 20 72  |s was the only r|
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00000940  20 66 6f 72 20 74 68 65  20 41 63 6f 72 6e 20 45  | for the Acorn E|
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00000970  4d 73 2e 45 6c 65 63 74  72 6f 6e 20 20 20 20 20  |Ms.Electron     |
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00000990  6e 67 20 53 79 73 74 65  6d 20 69 74 73 65 6c 66  |ng System itself|
000009a0  0a 21 36 35 30 32 45 6d  2e 52 4f 4d 73 2e 42 41  |.!6502Em.ROMs.BA|
000009b0  53 49 43 49 49 20 20 20  20 20 20 20 20 20 20 20  |SICII           |
000009c0  54 68 65 20 42 42 43 20  42 41 53 49 43 20 69 6e  |The BBC BASIC in|
000009d0  74 65 72 70 72 65 74 65  72 0a 0a 48 69 73 74 6f  |terpreter..Histo|
000009e0  72 69 63 61 6c 20 4e 6f  74 65 0a 3d 3d 3d 3d 3d  |rical Note.=====|
000009f0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 0a 0a 4f 53 20 32  |==========..OS 2|
00000a00  2e 78 20 77 61 73 20 66  6f 72 20 74 68 65 20 42  |.x was for the B|
00000a10  42 43 20 42 2b 0a 4f 53  20 33 2e 35 20 77 61 73  |BC B+.OS 3.5 was|
00000a20  20 74 68 65 20 73 65 63  6f 6e 64 20 72 65 6c 65  | the second rele|
00000a30  61 73 65 20 66 6f 72 20  74 68 65 20 4d 61 73 74  |ase for the Mast|
00000a40  65 72 20 31 32 38 0a 4f  53 20 34 2e 78 20 77 61  |er 128.OS 4.x wa|
00000a50  73 20 66 6f 72 20 74 68  65 20 4d 61 73 74 65 72  |s for the Master|
00000a60  20 45 54 20 28 45 63 6f  6e 65 74 20 54 65 72 6d  | ET (Econet Term|
00000a70  69 6e 61 6c 29 0a 0a 50  72 65 76 69 6f 75 73 20  |inal)..Previous |
00000a80  72 65 6c 65 61 73 65 73  20 66 6f 72 20 74 68 65  |releases for the|
00000a90  20 6f 72 69 67 69 6e 61  6c 20 42 42 43 20 77 65  | original BBC we|
00000aa0  72 65 20 30 2e 31 30 20  61 6e 64 20 31 2e 30 30  |re 0.10 and 1.00|
00000ab0  0a 54 68 65 20 45 6c 65  63 74 72 6f 6e 27 73 20  |.The Electron's |
00000ac0  4f 53 20 77 61 73 2c 20  63 6f 6e 66 75 73 69 6e  |OS was, confusin|
00000ad0  67 6c 79 2c 20 61 6c 73  6f 20 31 2e 30 30        |gly, also 1.00|
00000ade