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https://github.com/sheumann/NetDisk.git
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f912d9230e
The basic approach is just to see if GS/OS can understand the disk (i.e. if a VolumeGS call succeeds), and if not switch the order. We currently start with ProDOS order, then switch to DOS order if necessary. This is only currently done for 140k images.
91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
#ifndef DRIVER_H
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#define DRIVER_H
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#include <types.h>
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#define DEVICE_MFM_DRIVE 0x0017 /* This is the ID used for FDHD SuperDrives */
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#define NDIBS 16
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/* device information block */
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struct DIB {
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void *linkPtr;
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void *entryPtr;
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Word characteristics;
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LongWord blockCount;
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char devName[32];
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Word slotNum;
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Word unitNum;
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Word version;
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Word deviceID;
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Word headlink;
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Word forwardLink;
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void *extendedDIBPtr;
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Word DIBDevNum;
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};
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/* list of DIBs (argument to INSTALL_DRIVER) */
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struct DIBList {
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LongWord count;
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struct DIB *dibPointers[NDIBS];
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};
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/* GS/OS direct page structure */
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struct GSOSDP {
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Word deviceNum;
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Word callNum;
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Byte *bufferPtr;
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LongWord requestCount;
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LongWord transferCount;
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LongWord blockNum;
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Word blockSize;
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Word fstNum;
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Word volumeID;
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Word cachePriority;
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void *cachePointer;
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struct DIB *dibPointer;
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};
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#define statusListPtr bufferPtr
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#define statusCode fstNum
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#define controlListPtr bufferPtr
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#define controlCode fstNum
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/* GS/OS driver call numbers */
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#define Driver_Startup 0x0000
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#define Driver_Open 0x0001
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#define Driver_Read 0x0002
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#define Driver_Write 0x0003
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#define Driver_Close 0x0004
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#define Driver_Status 0x0005
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#define Driver_Control 0x0006
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#define Driver_Flush 0x0007
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#define Driver_Shutdown 0x0008
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/* Driver_Status subcalls */
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#define Get_Device_Status 0x0000
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#define Get_Config_Parameters 0x0001
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#define Get_Wait_Status 0x0002
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#define Get_Format_Options 0x0003
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#define Get_Partition_Map 0x0004
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/* Custom Driver_Control subcalls */
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#define Mount_URL 0x8080
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#define Switch_To_DOS_Order 0x8081
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/* Status list record for Get_DeviceStatus */
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typedef struct DeviceStatusRec {
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Word statusWord;
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LongWord numBlocks;
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} DeviceStatusRec;
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extern struct DIB dibs[NDIBS];
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extern struct DIBList dibList;
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extern void *gsosDP;
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void InitDIBs(void);
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Word DriverDispatch(Word callNum, struct GSOSDP *dp);
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#endif
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