Category:68000 Assembly: Difference between revisions

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Revision as of 02:01, 23 May 2022 (view source) Puppydrum64 (talk \| contribs) m (→‎The Stack: removed incorrect information) ← Older edit		Revision as of 02:03, 23 May 2022 (view source) Puppydrum64 (talk \| contribs) m (→‎The Stack) Newer edit →
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	====The Stack====		====The Stack====
	The 68000's stack is commonly referred to as <code>SP</code> but it is also address register <code>A7</code>. This register is handled differently than the other address registers when pushing bytes onto the stack. A byte value pushed onto the stack will be padded to the <b>right</b> ~~with zeroes~~. The stack needs to pad byte-length data so that it can stay word-aligned at all times. Otherwise the CPU would crash as soon as you tried to use the stack for anything other than a byte!		The 68000's stack is commonly referred to as <code>SP</code> but it is also address register <code>A7</code>. This register is handled differently than the other address registers when pushing bytes onto the stack. A byte value pushed onto the stack will be padded to the <b>right</b>. The stack needs to pad byte-length data so that it can stay word-aligned at all times. Otherwise the CPU would crash as soon as you tried to use the stack for anything other than a byte!