|
| Interrups | Categories | Contents |
AL = 01h AH = CAPI version number * 10 (14h for v2.0) ES:BX -> buffer for CAPI's use (refer to note below) CX = number of bytes for message buffer DX = maximum simultaneous logical (Level 3) connections SI = maximum concurrent received B3 data blocks (min. 2) DI = maximum B3 data block size (up to 2048 bytes)
Return:
AX = CAPI-assigned application ID 0000h on error BX = error number 1001h registration errorRange:
INT 00 to INT FF, selectable by program parameter
Notes: The caller is required to provide at least 512 bytes of stack space. The CAPI interrupt handler begins with a header (see #04068) which is nearly identical to the IBM Interrupt Sharing Protocol header (see #02568 at INT 2D"AMIS"), except that the short jump instruction to a hardware reset handler at offset 09h is zeroed out and the entire header is inexplicably shortened by one byte. The standard document suggests using 1024 + (1024*DX) bytes for the message buffer for typical applications. The total size of the application-provided buffer must be at least CX + DX*SI*DI bytes
See Also: AH=01h - INT F1/AL=02h
Index:
Installation check;Common ISDN APIFormat of CAPI v2.0 interrupt handler entry point: Offset Size Description (Table 04068) 00h 2 BYTEs short jump to actual start of interrupt handler, immediately following this data block (EBh 0Fh) 02h DWORD address of next handler in chain 06h WORD signature 424Bh 08h BYTE EOI flag (80h) 80h primary hardware interrupt handler (will issue EOI) 09h 2 BYTEs reserved (0) (is short jump to hardware reset routine in ISP header) 0Bh 4 BYTEs signature "CAPI" 0Fh 2 BYTEs two-digit CAPI version number in ASCII ('20')
See Also: #02568 at INT 2D
Category: Uncatagorized - Int F1h - C
|
| Interrups | Categories | Contents |
|
