dlong@sdsu.UUCP (04/24/87)
If your printer gets errors when running minix, but not MS-DOS, try this diff on your printer driver (kernel/printer.c) and remake the kernel, build boot disk, etc. Notice that the important thing is that this new driver ignores the three lowest order bits in the status word, while the previous driver assumed they should all be set. -------------------------------Cut Here-------------------------------------- 33,34c33,35 < #define NORMAL_STATUS 0xDF /* printer gives this status when idle */ < #define BUSY_STATUS 0x5F /* printer gives this status when busy */ --- > #define SIGNIF_STATUS 0xF8 /* significant status bits */ > #define NORMAL_STATUS 0xD8 /* printer gives this status when idle */ > #define BUSY_STATUS 0x58 /* printer gives this status when busy */ 38a40,41 > #define PR_BUSY 0x80 /* printer is busy */ > #define PR_ACK 0x40 /* ack bit */ 120a124 > value &= SIGNIF_STATUS; 210a215,216 > if ((status & PR_BUSY) == 0) printf("Printer is busy\n"); > if ((status & PR_ACK) == 0) printf("No ACK!\n"); 252a259 > value &= SIGNIF_STATUS; -- Dean Long University of California, San Diego sdcsvax!tiamat!dlong