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- /* Copyright (c) 1990 Commodore-Amiga, Inc.
- *
- * This example is provided in electronic form by Commodore-Amiga, Inc. for
- * use with the 1.3 revisions of the Addison-Wesley Amiga reference manuals.
- * The 1.3 Addison-Wesley Amiga Reference Manual series contains additional
- * information on the correct usage of the techniques and operating system
- * functions presented in this example. The source and executable code of
- * this example may only be distributed in free electronic form, via bulletin
- * board or as part of a fully non-commercial and freely redistributable
- * diskette. Both the source and executable code (including comments) must
- * be included, without modification, in any copy. This example may not be
- * published in printed form or distributed with any commercial product.
- * However, the programming techniques and support routines set forth in
- * this example may be used in the development of original executable
- * software products for Commodore Amiga computers.
- * All other rights reserved.
- * This example is provided "as-is" and is subject to change; no warranties
- * are made. All use is at your own risk. No liability or responsibility
- * is assumed.
- */
-
- /*
- * Keyboard device matrix example...
- */
-
- #include <exec/types.h>
- #include <exec/io.h>
- #include <exec/ports.h>
- #include <exec/memory.h>
- #include <devices/keyboard.h>
-
- #include <proto/exec.h>
-
- #include <stdio.h>
-
- int CXBRK(VOID) { return(0); }
-
- /*
- * There are keycodes from 0x00 to 0x7F, so the matrix needs to be
- * of 0x80 bits in size, or 0x80/8 which is 0x10 or 16 bytes...
- */
- #define MATRIX_SIZE 16L
-
- /*
- * This assembles the matrix for display that translates directly
- * to the RAW key value of the key that is up or down
- */
- VOID Display_Matrix(UBYTE *keyMatrix)
- {
- SHORT bitcount;
- SHORT bytecount;
- SHORT mask;
- USHORT twobyte;
-
- printf("\n 0 1 2 3 4 5 6 7");
- printf("\n +-----------------");
- for (bitcount=0;bitcount<16;bitcount++)
- {
- printf("\n%x |",bitcount);
- mask=1 << bitcount;
- for (bytecount=0;bytecount<16;bytecount+=2)
- {
- twobyte=keyMatrix[bytecount] | (keyMatrix[bytecount+1] << 8);
- if (twobyte & mask) printf(" *");
- else printf(" -");
- }
- }
- printf("\n\n");
- }
-
- VOID main(int argc, char *argv[])
- {
- struct IOStdReq *keyRequest;
- struct MsgPort *keyPort;
- UBYTE *keyMatrix;
-
- if (keyPort=CreatePort(NULL,NULL))
- {
- if (keyRequest=(struct IOStdReq *)CreateExtIO(keyPort,
- sizeof(struct IOStdReq)))
- {
- if (!OpenDevice("keyboard.device",NULL,
- (struct IORequest *)keyRequest,NULL))
- {
- if (keyMatrix=AllocMem(MATRIX_SIZE,MEMF_PUBLIC|MEMF_CLEAR))
- {
- keyRequest->io_Command=KBD_READMATRIX;
- keyRequest->io_Data=(APTR)keyMatrix;
- keyRequest->io_Length=13; /* MUST for 1.2/1.3 */
- DoIO((struct IORequest *)keyRequest);
-
- /* Check for CLI startup... */
- if (argc) Display_Matrix(keyMatrix);
-
- FreeMem(keyMatrix,MATRIX_SIZE);
- }
- CloseDevice((struct IORequest *)keyRequest);
- }
- DeleteExtIO((struct IORequest *)keyRequest);
- }
- DeletePort(keyPort);
- }
- }
-