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<H4>How to use ROMDOS</H4>\
<P>The ROM may be plugged into any standard ROM board in any position\
   between numbers 1 and 6 inclusive (ROMDOS cannot be used without the\
   AMSDOS ROM no. 7). ROMDOS should, however, be positioned below any ROM\
   that uses a standard AMSDOS command in a bar command form (e.g.|CAT\
   used by UTOPIA), as such programs could assume that the B: drive is a\
   40 track single sided drive similar to the A: drive.  No bar commands\
   are necessary to access ROMDOS from BASIC as ROMDOS will automatically\
   recognise the six formats for drive B: listed below.\
<P>In order to format discs up to 796K, a program called \"FORMATS.BIN\" is\
   needed.  This is supplied on the RAMDOS disc and instructions for use of\
   the formatting program may be found on pages 5 &amp; 6 of this manual.  The\
   formats which are automatically recognised are as follows:\
<BR><BR><CENTER><TABLE BORDER=1>\
  <TR><TH VALIGN=TOP>Format</TH><TH VALIGN=TOP>Sides</TH><TH VALIGN=TOP>Tracks</TH>\
      <TH VALIGN=TOP>Directory<BR>entries</TH><TH VALIGN=TOP>Capacity</TH></TR>\
  <TR><TD ALIGN=CENTER>D1</TD><TD ALIGN=CENTER>Double</TD><TD ALIGN=CENTER>80</TD><TD ALIGN=CENTER>128</TD><TD ALIGN=CENTER>716K</TD></TR>\
  <TR><TD ALIGN=CENTER>D10</TD><TD ALIGN=CENTER>Double</TD><TD ALIGN=CENTER>80</TD><TD ALIGN=CENTER>128</TD><TD ALIGN=CENTER>796K</TD></TR>\
  <TR><TD ALIGN=CENTER>D2</TD><TD ALIGN=CENTER>Double</TD><TD ALIGN=CENTER>80</TD><TD ALIGN=CENTER>256</TD><TD ALIGN=CENTER>712K</TD></TR>\
  <TR><TD ALIGN=CENTER>D20</TD><TD ALIGN=CENTER>Double</TD><TD ALIGN=CENTER>80</TD><TD ALIGN=CENTER>256</TD><TD ALIGN=CENTER>792K</TD></TR>\
  <TR><TD ALIGN=CENTER>D40</TD><TD ALIGN=CENTER>Double</TD><TD ALIGN=CENTER>40</TD><TD ALIGN=CENTER>128</TD><TD ALIGN=CENTER>396K</TD></TR>\
  <TR><TD ALIGN=CENTER>D80</TD><TD ALIGN=CENTER>Single</TD><TD ALIGN=CENTER>80</TD><TD ALIGN=CENTER>128</TD><TD ALIGN=CENTER>396K</TD></TR>\
</TABLE></CENTER>\
<P>ROMDOS does not affect CP/M and the RAMDOS disc contains the necessary\
   programs required in order to recognise the drive B formats.  Full\
   details of how to reconfigure a copy of your systems disc may be found\
   in the <A HREF=index.html?cpm22>CP/M 2.2</A> and <A HREF=index.html?cpm+>CP/M+</A>\
   sections of this manual.  Note that a disc must be in drive B\
   when |CPM is called in order for drive B to be logged in.  Discs for\
   drive B cannot be formatted with FORMAT.COM or DISCKIT3 because these\
   programs assume that drive B is identical to drive A. Some other\
   programs cannot be used because they are written for only one drive\
   (such as FILECOPY, DISCCOPY or DISCCHK).\
<H4>Technical details</H4>\
<P>HIMEM is not altered and all Basic commands, BIOS calls, and CP/M\
   commands work as normal.  The IBM format in drive A is replaced by the\
   PCW format.\
<P>ROMDOS replaces the action of Rom 7, although for copyright reasons the\
   original Rom 7 must be present.  This leaves all the memory above HIMEM\
   exactly as normal except: The ALV of drive B is now at &amp;BE00, with room\
   for 800K.  The CKS of drive B is now at &amp;BEC0, with room for 256\
   directory entries.\
<P>The different formats are recognised by their first sector number:\
<BR><BR><CENTER><TABLE BORDER=1>\
  <TR><TH VALIGN=TOP ROWSPAN=3><B>Drive A</B></TH>\
      <TH>PCW</TH><TD>&amp;01</TD></TR>\
  <TR><TH>System</TH><TD>&amp;41</TD></TR>\
  <TR><TH>Data</TH><TD>&amp;C1</TD></TR>\
  <TR><TH VALIGN=TOP ROWSPAN=6><B>Drive B</B></TH>\
	  <TH>D1</TH><TD>&amp;01</TD></TR>\
  <TR><TH>D10</TH><TD>&amp;11</TD></TR>\
  <TR><TH>D2</TH><TD>&amp;21</TD></TR>\
  <TR><TH>D20</TH><TD>&amp;31</TD></TR>\
  <TR><TH>D40</TH><TD>&amp;51</TD></TR>\
  <TR><TH>D80</TH><TD>&amp;71</TD></TR>\
</TABLE></CENTER>\
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