| 1 | /* This program receives an td8e Dectape image from the serial port from the |
| 2 | PDP8 dump program. It will prompt for the file to receive or use first |
| 3 | command line argument. It needs a config file dumprest.cfg or |
| 4 | $HOME/.dumprest.cfg with the format defined in config.c |
| 5 | |
| 6 | This program should be running before the PDP8 end is started. |
| 7 | |
| 8 | On the PC ctrl-break will terminate the program |
| 9 | */ |
| 10 | #ifdef PC |
| 11 | #include "encom.h" |
| 12 | #else |
| 13 | #include <termios.h> |
| 14 | #include <unistd.h> |
| 15 | #include <memory.h> |
| 16 | #endif |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <fcntl.h> |
| 20 | #include <time.h> |
| 21 | #include <signal.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <string.h> |
| 24 | |
| 25 | #define ARRAYSIZE(a) (sizeof(a) / sizeof(a[0])) |
| 26 | |
| 27 | int terminate = 0; |
| 28 | |
| 29 | #include "config.c" |
| 30 | #include "comm.c" |
| 31 | |
| 32 | main(argc,argv) |
| 33 | int argc; |
| 34 | char *argv[]; |
| 35 | { |
| 36 | int fd,c,i; |
| 37 | FILE *out; |
| 38 | char filename[256]; |
| 39 | char serial_dev[256]; |
| 40 | long baud; |
| 41 | int two_stop; |
| 42 | unsigned char buf[200]; |
| 43 | unsigned short temp; |
| 44 | int count,block,byte; |
| 45 | int chksum = 0; |
| 46 | |
| 47 | setup_config(&baud,&two_stop,serial_dev); |
| 48 | |
| 49 | if (argc > 1) { |
| 50 | strcpy(filename,argv[1]); |
| 51 | } else { |
| 52 | printf("Enter file name to receive\n"); |
| 53 | fflush(stdout); |
| 54 | scanf("%s",filename); |
| 55 | } |
| 56 | |
| 57 | #ifdef PC |
| 58 | out = fopen(filename,"wb"); |
| 59 | #else |
| 60 | out = fopen(filename,"w"); |
| 61 | #endif |
| 62 | if (out < 0) { |
| 63 | fprintf(stderr,"On file %s ",filename); |
| 64 | perror("open failed"); |
| 65 | exit(1); |
| 66 | } |
| 67 | |
| 68 | #if 0 |
| 69 | /* For testing read from file, only works in unix version */ |
| 70 | fd = open("dat",O_RDONLY,0666); |
| 71 | if (fd < 0) { |
| 72 | perror("Open failed on dat"); |
| 73 | exit(1); |
| 74 | } |
| 75 | #else |
| 76 | fd = init_comm(serial_dev,baud,two_stop); |
| 77 | #endif |
| 78 | count = -1; |
| 79 | block = 0; |
| 80 | byte = 0; |
| 81 | while(!terminate) { |
| 82 | c = ser_read(fd,(char *)buf,sizeof(buf)); |
| 83 | if (c < 0) { |
| 84 | perror("Serial read failed"); |
| 85 | exit(1); |
| 86 | } |
| 87 | for (i = 0; i < c; i++) { |
| 88 | if (count < 0 ) { |
| 89 | /* -2 = waiting for checksum */ |
| 90 | if (count == -2) { |
| 91 | if (byte == 0) { |
| 92 | temp = buf[i]; |
| 93 | byte = 1; |
| 94 | } else { |
| 95 | fclose(out); |
| 96 | temp = temp | (buf[i] << 8); |
| 97 | if (((temp + chksum) & 0xfff) != 0) { |
| 98 | printf("\nChecksum mismatch %x %x\n",temp,chksum); |
| 99 | exit(1); |
| 100 | } |
| 101 | printf("\nDone, wait for program to exit\n"); |
| 102 | exit(0); |
| 103 | } |
| 104 | } else { |
| 105 | /* -1 = waiting for block flag */ |
| 106 | if (buf[i] != 0xff && buf[i] != 0xfd) { |
| 107 | /* End of data flag */ |
| 108 | if (buf[i] == 0xfe) { |
| 109 | count = -2; |
| 110 | byte = 0; |
| 111 | } else { |
| 112 | printf("\nMissing start of block flag\n"); |
| 113 | exit(1); |
| 114 | } |
| 115 | } else { |
| 116 | count = 0; |
| 117 | if (buf[i] == 0xfd) |
| 118 | printf("\nblock %d bad\n", block); |
| 119 | } |
| 120 | } |
| 121 | } else { |
| 122 | /* Count >= 0 is word count in block */ |
| 123 | /* Byte is byte in 3 byte sequence for 2 words */ |
| 124 | if (byte == 0) { |
| 125 | temp = buf[i]; |
| 126 | byte++; |
| 127 | } else |
| 128 | if (byte == 1) { |
| 129 | temp = (temp | (buf[i] << 8)) & 0xfff; |
| 130 | fwrite(&temp,2,1,out); |
| 131 | chksum = chksum + temp; |
| 132 | temp = buf[i] >> 4; |
| 133 | byte++; |
| 134 | count++; |
| 135 | } else |
| 136 | if (byte == 2) { |
| 137 | temp = (temp | (buf[i] << 4)) & 0xfff; |
| 138 | fwrite(&temp,2,1,out); |
| 139 | chksum = chksum + temp; |
| 140 | byte = 0; |
| 141 | count++; |
| 142 | } |
| 143 | /* If at end of block setup for next */ |
| 144 | if (count == 129) { |
| 145 | count = -1; |
| 146 | block++; |
| 147 | byte = 0; |
| 148 | if (block % 5 == 0) { |
| 149 | printf("Block %d\r",block); |
| 150 | fflush(stdout); |
| 151 | } |
| 152 | } |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | return 1; |
| 157 | } |