<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>OK, Done.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#1F497D'>The program works as far as I tested it. It reads and writes into the FT-1900R (i.e., memory content).<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The details:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The memory record (structure) is 2-bytes longer, seems that it include the tone also, maybe other stuff, I did not check.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Memory location: </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>76Eh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Memory status: </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>6EEh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>All the rest seems to be exactly like the 1802.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The program, and some dumps are attached.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Some observations:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>When changed from VFO to MEM, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>0EAh </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>changed from 01h to 02h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>0168h </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>changed from 73h to 74h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>16Ah</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 01h->02h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>01E8</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 73h->74h.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>After Adding memory content M1 (145625K), 0EBh: 01h->02h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>0168h </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>changed from 74h to 75h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>16Bh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 02h->01h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>01E8</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 74h->75h.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>In addition, it replaces 144000K with 145625K at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>3B0h</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>, 144000K was the initial VFO freq after factory reset. (in addition, it stored the frequency in place, i.e., at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>0784h</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>, and updating mem index in </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>06eFh </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>– from 03h to 33h.)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Adding 148715K into M2 changed memory holding (or vfo) at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>03B0h </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>(3bytes of channel in bbcd), as well as changed the required memory record (at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>0798h</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>) and mem index (</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>06EEh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 00->03h).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Changing the channel/memory name of M2 simply changed the 6-bytes name at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>079Ch</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Last, I added 145325K into M3, while for some reason changing into this frequency turned duplex on with – shift (I did not change anything from factory reset regarding this, so maybe it got it from old memory content). This had several changes, apart from the memory record/structure. First, as usual, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>03B0h </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>changed into the new frequency. Second, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>03EEh </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>changed from 00 to 01 (duplex?). Then, mem index changed (</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>06EEh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 03h->33h) and the mem freq changes (at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>07ACh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>). Additionally, the byte before the frequency, i.e., flags, changed from 01h into 0Ch (like when I added M1 and M2).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Saving M3 again (after setting up tone into 91.5 (was 100 by default), changed </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>14Bh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 00->33h, </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>168h</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: DE00 0202 0000 0000 -> AB00 FFFF FFFF FFFF, and approximately the same at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>1CBh </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>and </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>1E8h</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>. This is, of course, in addition to handle the M3 record: after the freq shift value (006000), it changes the flags at </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>7B8h</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 0Ch->09h, and again the unknown flags at the extension </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>07BDh</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>: 0Ch->09h.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Best, Ran<o:p></o:p></span></p></div></div></body></html>