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Remove extern global variable from bios_disk.h

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This way interface of swapInDisks function is cleaner and we avoid a
warning when comparing (previously) signed swap position with an
unsigned array size or index.

Also, add some documentation to swapInDisks function.
This commit is contained in:
Patryk Obara 2019-12-18 21:34:38 +01:00 • committed by Patryk Obara
parent 8f81eb199a
commit c81269eebe
3 changed files with 21 additions and 12 deletions
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14
include/bios_disk.h
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@ -84,12 +84,22 @@ void incrementFDD(void);
extern std::array<std::shared_ptr<imageDisk>, MAX_DISK_IMAGES> imageDiskList;
extern std::array<std::shared_ptr<imageDisk>, MAX_SWAPPABLE_DISKS> diskSwap;
extern Bit32s swapPosition;
extern Bit16u imgDTASeg; /* Real memory location of temporary DTA pointer for fat image disk access */
extern RealPt imgDTAPtr; /* Real memory location of temporary DTA pointer for fat image disk access */
extern DOS_DTA *imgDTA;
void swapInDisks(void);
/**
* Insert 2 boot disks starting at swap_position into the drives A and B.
*
* Selected disks are wrapped around, so swapping in the last boot disk
* will place the first disk into drive B.
*
* When there's only 1 disk, it will be placed into both A and B drives.
*
* When there's no boot disks loaded, this function has no effect.
*/
void swapInDisks(unsigned int swap_position);
void swapInNextDisk(void);
bool getSwapRequest(void);