(DIR) Atari tape based text editor in BASIC VOACAP Port to Plan 9 Operating System (DIR) Commodore 64 multidevice emulator (DIR) Atari XL as usb keyboard (DIR) Using the Atari XL as a cw keyer 2017.05.06 *** Very low cost and very small cw keyer using msp430 msp430g2101 / flash = 1k / ram = 128 #ifndef BIG const long c_a = (0b011101L << 5) + 6; const long c_b = (0b0101010111L << 5) + 10; const long c_c = (0b010111010111L << 5) + 12; const long c_d = (0b01010111L << 5) + 8; const long c_e = (0b01L << 5) + 2; const long c_f = (0b0101110101L << 5) + 10; //const long c_g = (0b0101110111L << 5) + 10; //const long c_h = (0b01010101L << 5) + 8; //const long c_i = (0b0101L << 5) + 4; const long c_k = (0b0111010111L << 5) + 10; const long c_l = (0b0101011101L << 5) + 10; const long c_m = (0b01110111L << 5) + 8; const long c_n = (0b010111L << 5) + 6; //const long c_p = (0b010111011101L << 5) + 12; const long c_q = (0b01110101110111L << 5) + 14; const long c_r = (0b01011101L << 5) + 8; const long c_s = (0b010101L << 5) + 6; //const long c_u = (0b01110101L << 5) + 8; //const long c_w = (0b0111011101L << 5) + 10; const long c_v = (0b0111010101L << 5) + 10; const long spc = (0b0000000L << 5) + 7; const long c_qn = (0b0101011101110101L << 5) + 16; //const long c_9 = 18 + (0b010111011101110111L << 5); const long c_8 = 16 + (0b0101011101110111L << 5); //const long c_7 = 14 + (0b01010101110111L << 5); //const long c_6 = 12 + (0b010101010111L << 5); //const long c_5 = 10 + (0b0101010101L << 5); const long c_4 = 12 + (0b011101010101L << 5); //const long c_3 = 14 + (0b01110111010101L << 5); //const long c_2 = 16 + (0b0111011101110101L << 5); const long c_1 = 18 + (0b011101110111011101L << 5); const long c_0 = 20 + (0b01110111011101110111L << 5); #endif 2016.08.28 *** Three band Analog vfo controlled transmitter This is the photo of the week. A three band HF transmitter, transmi at 40m,20m,15m with a maximum power of 5 Watts. The design was heav influenced by W7ZOI published data. (HTM) photo 2015.06.29 *** FT221 computer interface Interfacing my OpenBSD Notebook to my old Yaesu FT221 radio so I ca to the International Space Station using APRS. (HTM) photo 2014.01.02 *** Past work and projects Past projects have covered software development in various language and digital electronics. The new site will show a few of them here designed to be easier to update. Here are a few that stands out bac 2013 - 2014. ++ links (HTM) Homebrew spectrum analyzer (HTM) Direct conversion receiver -----| Internet relay morsecode | ----- node.ch = 16; snprintf(node.myid, 16, "irmc_user"); snprintf(node.port, 16, "7890"); if(argc == 1) { snprintf(node.host, 64, "mtc-kob.dyndns.org"); snprintf(node.myid, 128, "FE (Fernan in Penang, MY) Intl. M node.ch = 16; } if(argc > 1) snprintf(node.host, 64, argv[1]); if(argc > 2) snprintf(node.myid, 128, argv[2]); if(argc > 3) node.ch = atoi(argv[3]); for(i = 0; i < 51; i++) c.code[i] = 0; memset(&hints, 0, sizeof hints); hints.ai_family = AF_UNSPEC; /* ipv4 or ipv6 */ hints.ai_socktype = SOCK_DGRAM; if ((rv = getaddrinfo(node.host, node.port, &hints, &servinfo)) != fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv)); return 1; } (HTM) original posting here (HTM) other historical plan9 things to be continued ... (DIR) ...items in the works