Differences

This shows you the differences between two versions of the page.

--- sd:isa [2026/04/23 05:40] – appledog
+++ sd:isa [2026/04/23 06:30] (current) – appledog
@@ Line 269: / Line 269: @@
 | 99 | [[#uab|UAB]]          | UAB | Unpack AL into low 4 bytes of AL and low 4 bytes of BL | |
+<wrap #skpc />
+**''SKPC ELM, AL''**\\ Skips characters starting at ELM until the character in AL is //not// found. It finishes with ELM pointing to the first non-matching character. Most of the time this is used to skip spaces: ''SKPC ELM, $20 ; skip spaces, ELM points after last space.''
 <wrap #pab />
-<code>#153 $99        PAB
+**''#153 $99 PAB''**\\ Pack the low 4 bits of AL and BL into AL. This is useful for BCD and 4bpp video mode.
-Pack the low 4 bits of AL and BL into AL. This is useful for BCD and 4bpp video mode.
+<code>
 Start:    [   AL   ][   BL   ]
           [....llll][....hhhh]
@@ Line 283: / Line 284: @@
 <wrap #uab />
 **''#153 $99 UAB''**
-<code>#153 $99        UAB
 Unpack the 8 bits in AL into AL and BL and zeroes the four high bits of AL and BL.
 This is useful for BCD and 4bpp video mode.
+<code>
 Start:    [   AL   ][   BL   ]
           [hhhhllll][........]
@@ Line 300: / Line 301: @@
 **''#201 $C9 CASEB base, selector, limit''**\\ switch-case-on-byte. Index an address from the table at ''base'' and jump to it. Checks each selector byte/word/etc. Checks a maximum of ''limit'' number of records. Will fall-through if not found. Table format: [selector][addr][selector][addr][selector][addr]...
-<codeprism lang=C highlight: [0]>
-int main(void) {
-    return 0;
-}
-</codeprism>