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Double Byte Data - Intellivision Wiki

Double Byte Data


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m (Protected "Double Byte Data" ([edit=autoconfirmed] (indefinite) [move=autoconfirmed] (indefinite)))
 
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[[Image:sdbd_mvii.png|center|SDBD prefix used with Immediate Mode instruction]]
[[Image:sdbd_mvii.png|center|SDBD prefix used with Immediate Mode instruction]]
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For [[Indirect]] mode accesses, if the indirect register is auto-incrementing (R4 or R5), the two values read come from consecutive addresses, as shown:
+
For [[Indirect]] mode accesses, if the indirect register is auto-incrementing (R4 or R5), the two values read come from consecutive addresses, as shown below.  The pointer also increments twice, so it points to the first location after the two locations the CPU ended up reading.
[[Image:sdbd_mvi_r4.png|center|SDBD prefix with Indirect via an auto-incrementing pointer]]
[[Image:sdbd_mvi_r4.png|center|SDBD prefix with Indirect via an auto-incrementing pointer]]
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<br/>

Latest revision as of 08:14, 4 December 2010

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