General Hal Support - Epson S1D13505F00A Technical Manual

11: HARDWARE ABSTRACTION LAYER (HAL)

General HAL Support

General HAL support covers the miscellaneous functions. There is usually no more than one or two
functions devoted to any particular aspect of S1D13505 operation.
int seGetId(int DevID, int * pId)
Description: Reads the S1D13505 revision code register to determine the chip product and
revisions. The interpreted value is returned in pID.
Parameters: Device
pId
For the S1D13505 the return values are currently:
ID_S1D13505
ID_S1D13505F00A
ID_UNKNOWN
Other HAL libraries will return their respective controller IDs upon detection of
their controller.
Return Value: ERR_OK
ERR_UNKNOWN_DEVICE - returned when pID returns ID_UNKNOWN. The
Note: seGetId() will disable hardware suspend Intel platforms, and will enable the host interface (reg-
ister [1Bh]) on all platforms.
void seGetHalVersion(const char ** pVersion, const char ** pStatus,
const char **pStatusRevision)
Description: Retrieves the HAL library version. The return values are all ASCII strings. A
typical return would be: "1.01" (HAL version 1.01), "B" (The 'B' is the beta desig-
nator), "5" (This example would be Beta5, if pStatus is NULL the so should
pStatusRevision).
Parameters: pVersion
pStatus
pStatusRevision - must point to an allocated string of size STAT_REV_SIZE
Return Value: None
int seGetMemSize(int DevID, DWORD * pSize)
Description: This routine returns the amount of installed video memory. The memory size is
determined by reading the status of MD6 and MD7. *pSize will be set to either
0x80000 (512 KB) or 0x200000 (2 MB).
Parameters: DevID
pSize
Return Value: ERR_OK
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- registered device ID
- pointer to the byte to receive the controller ID.
- operation completed with no problems
HAL was unable to identify the display controller.
- must point to an allocated string of size VER_SIZE
- must point to an allocated string of size STATUS_SIZE
- registered device ID
- pointer to a DWORD to receive the size
- the operation completed successfully
EPSON
S1D13505 PROGRAMMING NOTES
AND EXAMPLES (X23A-G-003-05)