Advanced Hal Functions - Epson S1D13505F00A Technical Manual

int seDelay(int DevID, DWORD Seconds)
Description: This function will delay for the number of seconds given in Seconds before
returning to the caller.
This function was originally intended for non-PC platforms. Information on how
to access the timers was not always immediately available however we do know
frame rate and can use that for timing calculations. The S1D13505 registers must
be initialized for this function to work correctly.
PC platform function calls the C timing functions and is therefore independent of
the register settings.
Parameters: DevID
Seconds
Return Value: ERR_OK
ERR_FAILED - returned only on non-PC platforms when the S1D13505 registers

Advanced HAL Functions

Advanced HAL functions include the functions to support split and virtual screen operation and are
the same features that were described in the section on advanced programming techniques.
int seSplitInit(int DevID, DWORD Scrn1Addr, DWORD Scrn2Addr)
Description: This function prepares the system for split screen operation. In order for split
screen to function the starting address in display buffer for the upper portion -
screen 1, and the lower portion - screen 2 must be specified. Screen 1 is always
displayed above screen 2 on the display regardless of the location of their
respective starting addresses.
Parameters: DevID
Scrn1Addr
Scrn2Addr
Return Value: ERR_OK
Note: It is assumed that the system has been properly initialized prior to calling seSplitInit().
int seSplitScreen(int DevID, int WhichScreen, long VisibleScanlines)
Description: Changes the relevant registers to adjust the split screen according to the number of
visible lines requested. WhichScreen determines which screen, screen 1 or screen
2, to change.
The smallest screen 1 can be set to is one line. This is due to the way the register
values are used internally on the S1D13505. Setting the line compare register to
zero results in one line of screen 1 being displayed before starting on screen 2.
Parameters: DevID
WhichScreen
VisibleScanlines - number of lines to show for the selected screen
Return Value: ERR_OK
ERR_HAL_BAD_ARG - argument VisibleScanlines is negative or is greater than
Note: seSplitInit() must be called before calling seSplitScreen().
S1D13505 PROGRAMMING NOTES
AND EXAMPLES (X23A-G-003-05)
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11: HARDWARE ABSTRACTION LAYER (HAL)
- registered device ID
- time to delay in seconds
- operation completed with no problems
have not bee initialized
- registered device ID
- offset in display buffer, in bytes, to the start of screen 1
- offset in display buffer, in bytes, to the start of screen 2
- operation completed with no problems
- registered device ID
- must be set to 1 or 2, or use the constants SCREEN1 or
SCREEN2, to identify which screen to base calculations on
- operation completed with no problems
vertical panel size or WhichScreen is not SCREEN1 or
SCREEN2.
EPSON
2-39