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SUBR - Revision history
2026-04-17T18:31:25Z
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Mr z: Protected "SUBR" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))
2010-12-04T09:16:23Z
<p>Protected "<a href="/index.php/SUBR" title="SUBR">SUBR</a>" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite))</p>
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<td colspan="1" style="background-color: white; color:black; text-align: center;">Revision as of 09:16, 4 December 2010</td>
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Mr z
http://wiki.intellivision.us/index.php?title=SUBR&diff=1414&oldid=prev
Pingaso at 19:12, 12 January 2005
2005-01-12T19:12:54Z
<p></p>
<p><b>New page</b></p><div>[[Category:CP1610]]<br />
<table border><br />
<tr><td>Instruction Name</td><td>Subtract Registers</td></tr><br />
<tr><td>Mnemonic</td><td>SUBR</td></tr><br />
<tr><td>CP1610 Clock Cycles</td><td>6</td></tr><br />
<tr><td>Interruptible</td><td>Yes</td></tr><br />
<tr><td>Opcode Range</td><td>$0100-$013F</td></tr><br />
<tr><td>Input Flags</td><td>None</td></tr><br />
<tr><td>Output Flags</td><td>[[Sign Flag]], [[Zero Flag]], [[Overflow Flag]], [[Carry Flag]]</td></tr><br />
</table><br/><br />
The Subtract Registers (SUBR) instruction subtracts the value in the specified source register from the value in the specified destination register, stores the result in the destination register, and sets or clears the [[Sign Flag]], [[Zero Flag]], [[Overflow Flag]], and [[Carry Flag]] according to the result.<br/><br />
<br />
0000:0001:00ss:sddd<br/><br />
where:<br />
sss indicates the source register<br />
such that:<br />
sss == 000 indicates register R0<br />
sss == 001 indicates register R1<br />
sss == 010 indicates register R2<br />
sss == 011 indicates register R3<br />
sss == 100 indicates register R4<br />
sss == 101 indicates register R5<br />
sss == 110 indicates register R6<br />
sss == 111 indicates register R7<br/><br />
ddd indicates the destination register<br />
such that:<br />
ddd == 000 indicates register R0<br />
ddd == 001 indicates register R1<br />
ddd == 010 indicates register R2<br />
ddd == 011 indicates register R3<br />
ddd == 100 indicates register R4<br />
ddd == 101 indicates register R5<br />
ddd == 110 indicates register R6<br />
ddd == 111 indicates register R7</div>
Pingaso