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This commit is contained in:
redcode
2022-07-05 12:18:27 +02:00
parent 4d55a5474f
commit c3b0d750ca
1 changed files with 7 additions and 9 deletions
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16
API/Z80.h
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@@ -305,14 +305,13 @@ typedef struct {
*
* All instructions with @c DDh prefix behave in exactly the same way
* as their counterparts with @c FDh prefix, differing only in which
* index register is used. This member allows optimizing the size of
* the Z80 library by acting as a temporary index register, thus making
* it unnecessary to duplicate code in order to emulate these two
* groups of instructions.
* index register is used. This allows optimizing the size of the Z80
* library by using a temporary index register, making it unnecessary
* to duplicate code to emulate these two groups of instructions.
*
* After a @c DDh or @c FDh prefix is fetched, the index register is
* copied into this member, next the instruction is executed and finaly
* this member is copied back into the index register. */
* When a @c DDh or @c FDh prefix is fetched, the index register
* corresponding to the prefix is copied into this member, which is
* copied back into the index register at the end of the instruction.
ZInt16 xy;
@@ -340,8 +339,7 @@ typedef struct {
* eventually corrupts R7.
*
* This member is used to preserve a copy of R7 while the emulation is
* running, since the emulator performs normal increments for speed
* reasons. Only the most significant bit is used, the others must be
* running. Only the most significant bit is used, the others must be
* considered garbage. */
zuint8 r7;