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spectrum_readplusd.lzh
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ReadPlusD.doc
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1991-04-25
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2KB
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49 lines
ReadPlusD reads an MGT (Miles Gordon Technology) PLUS D 3.5" double-sided
diskette on any Amiga. MGT PLUS D diskettes are used on Sinclair Spectrum
computers. This is useful for transferring Spectrum programs to the format
required by the Spectrum emulator on the Amiga.
ReadPlusD requires messydisk.device (supplied with MSH on Fred Fish disk 382)
in the devs: directory.
CLI usage: ReadPlusD disk-unit-number [directory-entry-number output-file]
The disk unit number should be an integer in the range 0..3 corresponding to
the drive (DF0:..DF3:) containing the PLUS D diskette.
If given just the unit-number, ReadPlusD displays a directory of the disk.
If you also give a directory entry number and an output file name, ReadPlusD
converts a 48 kbyte snapshot file to the format required by the Amiga Spectrum
emulator. The output is written to the given file name.
Note that you specify the number of the directory entry (an integer in the
range 1..80), not the name of the input file. If the file is not a 48 kbyte
snapshot file, ReadPlusD displays an error message.
Examples:
ReadPlusD 2 get a directory of the PLUS D disk in DF2:
ReadPlusD 1 17 RAM:TRON convert the 17th file on DF1: to RAM:TRON
Known bug:
ReadPlusD always sets the z80 interrupt mode to 1. A few Spectrum programs use
interrupt mode 2. If a converted program doesn't run and you suspect it might
use mode 2, try patching the byte at offset 25 in the output file to be $02.
Use a binary file editor like, for example, NEWZAP. The byte you patch is
actually the 26th byte in the file (because the 1st byte is at offset 0), and
it will always be $01 to begin with.
This file may be distributed anywhere provided it is unmodified and is not
sold for profit. Please report bugs to the author.
Author: Peter McGavin, 86 Totara Crescent, Lower Hutt, New Zealand.
e-mail: srwmpnm@wnv.dsir.govt.nz .