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Move MAX_SECTOR_POS and change shift into a while loop

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Peter Evans
2017-12-15 16:52:47 -06:00
parent c5c010699c
commit 06c8d623e7
1 changed files with 2 additions and 8 deletions
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10
src/apple2.dd.c
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@@ -18,12 +18,6 @@
*/ */
#define _240K_ 245760 #define _240K_ 245760
/*
* This is the last _accessible_ sector position within a track (you can
* have 0 - 4095).
*/
#define MAX_SECTOR_POS 4095
apple2dd * apple2dd *
apple2dd_create() apple2dd_create()
{ {
@@ -160,9 +154,9 @@ apple2dd_shift(apple2dd *drive, int pos)
{ {
drive->sector_pos += pos; drive->sector_pos += pos;
if (drive->sector_pos > MAX_SECTOR_POS) { while (drive->sector_pos > MAX_SECTOR_POS) {
// We need to reset the sector pos to zero, because... // We need to reset the sector pos to zero, because...
drive->sector_pos = 0; drive->sector_pos -= (MAX_SECTOR_POS + 1);
// We also need to move to the next track, so let's adjust by // We also need to move to the next track, so let's adjust by
// two half-tracks. // two half-tracks.