// (C) 2018-2022 by Folkert van Heusden // Released under Apache License v2.0 #include #include #include "memory.h" #include "cpu.h" #include "tty.h" #include "utils.h" #include "error.h" bus *b = nullptr; cpu *c = nullptr; tty *tty_ = nullptr; uint16_t loadbin(bus *const b) { #define PROGRAM 1 #if PROGRAM == 1 // xxd -i tester <-- raw, not the .bin! constexpr unsigned char tester[] = { 0xc6, 0x15, 0x00, 0x02, 0x77, 0x00, 0xb6, 0x05, 0xc0, 0x15, 0xcf, 0x03, 0xf7, 0x09, 0xe0, 0x05, 0xc1, 0x15, 0x5d, 0x6b, 0x01, 0x8d, 0xa1, 0x00, 0xa2, 0x00, 0xa4, 0x00, 0xa8, 0x00, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0x00, 0xc2, 0x8b, 0x01, 0x02, 0x87, 0x00, 0x80, 0x10, 0xf7, 0x09, 0xde, 0x05, 0xc0, 0x15, 0xa0, 0x03, 0xf7, 0x09, 0xb8, 0x05, 0x87, 0x00, 0xa1, 0x00, 0xa2, 0x00, 0xa4, 0x00, 0xa8, 0x00, 0x87, 0x00, 0xf7, 0x09, 0xf2, 0xff, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x8b, 0x04, 0x03, 0xc2, 0x15, 0x01, 0x00, 0x77, 0x00, 0x2e, 0x01, 0xf7, 0x09, 0xde, 0xff, 0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8b, 0x04, 0x02, 0xc2, 0x15, 0x02, 0x00, 0x77, 0x00, 0x1a, 0x01, 0xf7, 0x09, 0xca, 0xff, 0xc1, 0x15, 0x7f, 0x00, 0x81, 0x8a, 0x04, 0x85, 0xc2, 0x15, 0x03, 0x00, 0x77, 0x00, 0x06, 0x01, 0xf7, 0x09, 0xb6, 0xff, 0xc1, 0x15, 0x80, 0xff, 0xc1, 0x8a, 0x04, 0x85, 0xc2, 0x15, 0x04, 0x00, 0x77, 0x00, 0xf2, 0x00, 0xf7, 0x09, 0xa2, 0xff, 0xc1, 0x15, 0x7f, 0x00, 0x81, 0x8a, 0x04, 0x81, 0xc2, 0x15, 0x05, 0x00, 0x77, 0x00, 0xde, 0x00, 0xf7, 0x09, 0x8e, 0xff, 0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8a, 0x04, 0x80, 0xc2, 0x15, 0x06, 0x00, 0x77, 0x00, 0xca, 0x00, 0xf7, 0x09, 0x7a, 0xff, 0xc1, 0x15, 0x80, 0x00, 0xc1, 0x8c, 0x04, 0x87, 0xc2, 0x15, 0x07, 0x00, 0x77, 0x00, 0xb6, 0x00, 0xf7, 0x09, 0x66, 0xff, 0xc1, 0x15, 0x40, 0x00, 0xc1, 0x8c, 0x04, 0x86, 0xc2, 0x15, 0x08, 0x00, 0x77, 0x00, 0xa2, 0x00, 0xf7, 0x09, 0x52, 0xff, 0xc1, 0x15, 0x00, 0x00, 0xc1, 0x0b, 0x04, 0x03, 0xc2, 0x15, 0x09, 0x00, 0x77, 0x00, 0x8e, 0x00, 0xf7, 0x09, 0x3e, 0xff, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0b, 0x04, 0x02, 0xc2, 0x15, 0x0a, 0x00, 0x77, 0x00, 0x7a, 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0x00, 0xc1, 0x0b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0xc2, 0x25, 0x04, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x01, 0x00, 0x77, 0x00, 0x22, 0x00, 0xc0, 0x15, 0x0f, 0x00, 0x00, 0x8d, 0xc1, 0x15, 0x00, 0x80, 0xc1, 0x0b, 0xc2, 0x8d, 0xc2, 0x45, 0xf0, 0xff, 0xc2, 0x25, 0x08, 0x00, 0x04, 0x03, 0xc0, 0x15, 0x02, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0xe2, 0x00, 0x80, 0x10, 0xf7, 0x09, 0xdc, 0x00, 0xc0, 0x15, 0x3c, 0x07, 0xf7, 0x09, 0xb6, 0x00, 0x87, 0x00, 0x54, 0x53, 0x54, 0x20, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x69, 0x6e, 0x67, 0x20, 0x46, 0x41, 0x49, 0x4c, 0x0d, 0x0a, 0x00, 0x54, 0x53, 0x54, 0x20, 0x74, 0x65, 0x73, 0x74, 0x0d, 0x0a, 0x00, 0x00, 0xc0, 0x15, 0xb2, 0x07, 0xf7, 0x09, 0x8c, 0x00, 0xc0, 0x15, 0x08, 0x00, 0x00, 0x8d, 0x02, 0x04, 0x77, 0x00, 0x08, 0x00, 0xc0, 0x15, 0x01, 0x00, 0x77, 0x00, 0x12, 0x00, 0xc0, 0x15, 0x0a, 0x00, 0x00, 0x8d, 0x04, 0x04, 0xc0, 0x15, 0x02, 0x00, 0x77, 0x00, 0x02, 0x00, 0x87, 0x00, 0xf7, 0x09, 0x80, 0x00, 0x80, 0x10, 0xf7, 0x09, 0x7a, 0x00, 0xc0, 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int tester_len = 1924; uint16_t base = 512; uint16_t exec = 512; const unsigned char *code = tester; unsigned int code_len = tester_len; #endif #if PROGRAM == 2 constexpr unsigned char test2[] = { 0xc6, 0x15, 0x00, 0x02, 0xc0, 0x15, 0x24, 0x02, 0xdf, 0x09, 0x0e, 0x02, 0x07, 0x89, 0x66, 0x10, 0x05, 0x01, 0xdf, 0x8b, 0x74, 0xff, 0xfd, 0x03, 0x5f, 0x90, 0x76, 0xff, 0x01, 0x94, 0xf9, 0x02, 0x81, 0x15, 0x87, 0x00, 0x74, 0x68, 0x65, 0x20, 0x71, 0x75, 0x69, 0x63, 0x6b, 0x20, 0x62, 0x72, 0x6f, 0x77, 0x6e, 0x20, 0x2e, 0x2e, 0x2e, 0x00 }; constexpr unsigned int test2_len = 56; uint16_t base = 512; uint16_t exec = 512; const unsigned char *code = test2; unsigned int code_len = test2_len; #endif for(int i=0; i writeByte(base++, code[i]); return exec; } uint16_t exec_addr = 0; uint32_t start_ts = 0; void setup() { Serial.begin(115200); Serial.println(F("This PDP-11 emulator is called \"kek\" (reason for that is forgotten) and was written by Folkert van Heusden.")); Serial.print(F("Size of int: ")); Serial.println(sizeof(int)); Serial.print(F("CPU clock frequency: ")); Serial.println(getCpuFrequencyMhz()); Serial.print(F("Free RAM before init: ")); Serial.println(ESP.getFreeHeap()); Serial.println(F("Init bus")); b = new bus(); Serial.println(F("Init CPU")); c = new cpu(b); Serial.println(F("Connect CPU to BUS")); b->add_cpu(c); c->setEmulateMFPT(true); Serial.println(F("Init TTY")); tty_ = new tty(false); Serial.println(F("Connect TTY to bus")); b->add_tty(tty_); Serial.println(F("Load program")); exec_addr = loadbin(b); c->setRegister(7, exec_addr); Serial.print(F("Free RAM after init: ")); Serial.println(ESP.getFreeHeap()); pinMode(LED_BUILTIN, OUTPUT); Serial.println(F("Press to start")); for(;;) { if (Serial.available()) { int c = Serial.read(); if (c == 13 || c == 10) break; } delay(1); } Serial.println(F("Emulation starting!")); start_ts = millis(); } uint32_t icount = 0; void loop() { icount++; if ((icount & 1023) == 0) { if (Serial.available()) { char c = Serial.read(); if (c > 0 && c < 127) tty_->sendChar(c); } } if (c->step()) { Serial.println(F("")); Serial.println(F(" *** EMULATION STOPPED *** ")); Serial.print(F("Instructions per second: ")); Serial.println(icount * 1000.0 / (millis() - start_ts)); delay(3000); Serial.println(F(" *** EMULATION RESTARTING *** ")); c->setRegister(7, exec_addr); c->resetHalt(); start_ts = millis(); icount = 0; } }