i/o-read: value returned
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folkert van heusden
parent
875e7ff4dd
commit
f0a199f7c1
GPG key ID:
6B6455EDFEED3BD1
1 changed files with 103 additions and 68 deletions
171
bus.cpp
171
bus.cpp
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@ -121,28 +121,34 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev,
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if (a >= 0160000) {
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//// REGISTERS ////
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if (a >= ADDR_KERNEL_R && a <= ADDR_KERNEL_R + 5) { // kernel R0-R5
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if (!peek_only) DOLOG(debug, false, "READ-I/O kernel R%d", a - ADDR_KERNEL_R);
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return c->getRegister(a - ADDR_KERNEL_R, 0, false) & (word_mode ? 0xff : 0xffff);
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uint16_t temp = c->getRegister(a - ADDR_KERNEL_R, 0, false) & (word_mode ? 0xff : 0xffff);
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if (!peek_only) DOLOG(debug, false, "READ-I/O kernel R%d: %06o", a - ADDR_KERNEL_R, temp);
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return temp;
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}
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if (a >= ADDR_USER_R && a <= ADDR_USER_R + 5) { // user R0-R5
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if (!peek_only) DOLOG(debug, false, "READ-I/O user R%d", a - ADDR_USER_R);
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return c->getRegister(a - ADDR_USER_R, 3, false) & (word_mode ? 0xff : 0xffff);
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uint16_t temp = c->getRegister(a - ADDR_USER_R, 3, false) & (word_mode ? 0xff : 0xffff);
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if (!peek_only) DOLOG(debug, false, "READ-I/O user R%d: %06o", a - ADDR_USER_R, temp);
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return temp;
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}
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if (a == ADDR_KERNEL_SP) { // kernel SP
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if (!peek_only) DOLOG(debug, false, "READ-I/O kernel SP");
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return c->getStackPointer(0) & (word_mode ? 0xff : 0xffff);
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uint16_t temp = c->getStackPointer(0) & (word_mode ? 0xff : 0xffff);
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if (!peek_only) DOLOG(debug, false, "READ-I/O kernel SP: %06o", temp);
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return temp;
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}
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if (a == ADDR_PC) { // PC
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if (!peek_only) DOLOG(debug, false, "READ-I/O PC");
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return c->getPC() & (word_mode ? 0xff : 0xffff);
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uint16_t temp = c->getPC() & (word_mode ? 0xff : 0xffff);
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if (!peek_only) DOLOG(debug, false, "READ-I/O PC: %06o", temp);
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return temp;
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}
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if (a == ADDR_SV_SP) { // supervisor SP
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if (!peek_only) DOLOG(debug, false, "READ-I/O supervisor SP");
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return c->getStackPointer(1) & (word_mode ? 0xff : 0xffff);
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uint16_t temp = c->getStackPointer(1) & (word_mode ? 0xff : 0xffff);
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if (!peek_only) DOLOG(debug, false, "READ-I/O supervisor SP: %06o", temp);
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return temp;
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}
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if (a == ADDR_USER_SP) { // user SP
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if (!peek_only) DOLOG(debug, false, "READ-I/O user SP");
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return c->getStackPointer(3) & (word_mode ? 0xff : 0xffff);
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uint16_t temp = c->getStackPointer(3) & (word_mode ? 0xff : 0xffff);
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if (!peek_only) DOLOG(debug, false, "READ-I/O user SP: %06o", temp);
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return temp;
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}
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///^ registers ^///
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@ -156,47 +162,57 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev,
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}
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if (a == ADDR_CPU_ERR) { // cpu error register
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if (!peek_only) DOLOG(debug, false, "READ-I/O CPU error");
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return CPUERR & 0xff;
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uint16_t temp = CPUERR & 0xff;
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if (!peek_only) DOLOG(debug, false, "READ-I/O CPU error: %03o", temp);
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return temp;
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}
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if (a == ADDR_MAINT) { // MAINT
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if (!peek_only) DOLOG(debug, false, "READ-I/O MAINT");
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return 1; // POWER OK
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uint16_t temp = 1; // POWER OK
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if (!peek_only) DOLOG(debug, false, "READ-I/O MAINT: %o", temp);
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return temp;
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}
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if (a == ADDR_CONSW) { // console switch & display register
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if (!peek_only) DOLOG(debug, false, "READ-I/O console switch (%06o)", console_switches);
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return console_switches;
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uint16_t temp = console_switches;
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if (!peek_only) DOLOG(debug, false, "READ-I/O console switch: %o", temp);
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return temp;
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}
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if (a == ADDR_KW11P) { // KW11P programmable clock
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if (!peek_only) DOLOG(debug, false, "READ-I/O programmable clock");
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return 128;
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uint16_t temp = 128;
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if (!peek_only) DOLOG(debug, false, "READ-I/O programmable clock: %o", temp);
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return temp;
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}
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if (a == ADDR_PIR || a == ADDR_PIR + 1) { // PIR
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if (!peek_only) DOLOG(debug, false, "READ-I/O PIR");
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uint16_t temp = 0;
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if (word_mode == false)
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return PIR;
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temp = PIR;
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else
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temp = a == ADDR_PIR ? PIR & 255 : PIR >> 8;
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return a == ADDR_PIR ? PIR & 255 : PIR >> 8;
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if (!peek_only) DOLOG(debug, false, "READ-I/O PIR: %o", temp);
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return temp;
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}
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if (a == ADDR_SYSTEM_ID) {
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if (!peek_only) DOLOG(debug, false, "READ-I/O system id");
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return 011064;
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uint16_t temp = 011064;
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if (!peek_only) DOLOG(debug, false, "READ-I/O system id: %o", temp);
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return temp;
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}
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if (a == ADDR_LFC) { // line frequency clock and status register
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if (!peek_only) DOLOG(debug, false, "READ-I/O line freq clock");
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return lf_csr;
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uint16_t temp = lf_csr;
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if (!peek_only) DOLOG(debug, false, "READ-I/O line frequency clock: %o", temp);
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return temp;
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}
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if (a == ADDR_LP11CSR) { // printer, CSR register, LP11
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if (!peek_only) DOLOG(debug, false, "READ-I/O LP11 CSR");
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return 0x80;
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uint16_t temp = 0x80;
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if (!peek_only) DOLOG(debug, false, "READ-I/O LP11 CSR: %o", temp);
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return temp;
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}
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/// MMU ///
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@ -215,92 +231,109 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev,
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///////////
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if (a >= 0177740 && a <= 0177753) { // cache control register and others
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if (!peek_only) DOLOG(debug, false, "READ-I/O cache control register/others (%06o): %o", a, 0);
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// TODO
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return 0;
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}
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if (a >= 0170200 && a <= 0170377) { // unibus map
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if (!peek_only) DOLOG(debug, false, "READ-I/O unibus map (%06o)", a);
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if (!peek_only) DOLOG(debug, false, "READ-I/O unibus map (%06o): %o", a, 0);
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// TODO
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return 0;
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}
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if (word_mode) {
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if (a == ADDR_PSW) { // PSW
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if (!peek_only) DOLOG(debug, false, "READ-I/O PSW LSB");
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return c->getPSW() & 255;
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uint8_t temp = c->getPSW();
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if (!peek_only) DOLOG(debug, false, "READ-I/O PSW LSB: %03o", temp);
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return temp;
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}
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if (a == ADDR_PSW + 1) {
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if (!peek_only) DOLOG(debug, false, "READ-I/O PSW MSB");
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return c->getPSW() >> 8;
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uint8_t temp = c->getPSW() >> 8;
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if (!peek_only) DOLOG(debug, false, "READ-I/O PSW MSB: %03o", temp);
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return temp;
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}
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if (a == ADDR_STACKLIM) { // stack limit register
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if (!peek_only) DOLOG(debug, false, "READ-I/O stack limit register (low)");
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return c->getStackLimitRegister() & 0xff;
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uint8_t temp = c->getStackLimitRegister();
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if (!peek_only) DOLOG(debug, false, "READ-I/O stack limit register (low): %03o", temp);
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return temp;
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}
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if (a == ADDR_STACKLIM + 1) { // stack limit register
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if (!peek_only) DOLOG(debug, false, "READ-I/O stack limit register (high)");
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return c->getStackLimitRegister() >> 8;
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uint8_t temp = c->getStackLimitRegister() >> 8;
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if (!peek_only) DOLOG(debug, false, "READ-I/O stack limit register (high): %03o", temp);
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return temp;
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}
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if (a == ADDR_MICROPROG_BREAK_REG) { // microprogram break register
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if (!peek_only) DOLOG(debug, false, "READ-I/O microprogram break register (low: %03o)", microprogram_break_register & 255);
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return microprogram_break_register & 255;
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uint8_t temp = microprogram_break_register;
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if (!peek_only) DOLOG(debug, false, "READ-I/O microprogram break register (low): %03o", temp);
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return temp;
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}
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if (a == ADDR_MICROPROG_BREAK_REG + 1) { // microprogram break register
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if (!peek_only) DOLOG(debug, false, "READ-I/O microprogram break register (high: %03o)", microprogram_break_register >> 8);
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return microprogram_break_register >> 8;
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uint8_t temp = microprogram_break_register >> 8;
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if (!peek_only) DOLOG(debug, false, "READ-I/O microprogram break register (high): %03o", temp);
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return temp;
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}
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if (a == ADDR_MMR0) {
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR0 LO");
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return MMR0 & 255;
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uint8_t temp = MMR0;
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR0 LO: %03o", temp);
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return temp;
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}
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if (a == ADDR_MMR0 + 1) {
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR0 HI");
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return MMR0 >> 8;
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uint8_t temp = MMR0 >> 8;
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR0 HI: %03o", temp);
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return temp;
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}
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}
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else {
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if (a == ADDR_MMR0) {
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR0");
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return MMR0;
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uint16_t temp = MMR0;
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR0: %06o", temp);
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return temp;
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}
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if (a == ADDR_MMR1) { // MMR1
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR1");
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return MMR1;
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uint16_t temp = MMR1;
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR1: %06o", temp);
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return temp;
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}
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if (a == ADDR_MMR2) { // MMR2
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR2");
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return MMR2;
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uint16_t temp = MMR2;
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR2: %06o", temp);
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return temp;
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}
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if (a == ADDR_MMR3) { // MMR3
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR3");
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return MMR3;
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uint16_t temp = MMR3;
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if (!peek_only) DOLOG(debug, false, "READ-I/O MMR3: %06o", temp);
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return temp;
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}
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if (a == ADDR_PSW) { // PSW
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if (!peek_only) DOLOG(debug, false, "READ-I/O PSW");
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return c->getPSW();
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uint16_t temp = c->getPSW();
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if (!peek_only) DOLOG(debug, false, "READ-I/O PSW: %06o", temp);
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return temp;
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}
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if (a == ADDR_STACKLIM) { // stack limit register
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if (!peek_only) DOLOG(debug, false, "READ-I/O stack limit register");
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return c->getStackLimitRegister();
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uint16_t temp = c->getStackLimitRegister();
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if (!peek_only) DOLOG(debug, false, "READ-I/O stack limit register: %06o", temp);
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return temp;
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}
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if (a == ADDR_CPU_ERR) { // cpu error register
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if (!peek_only) DOLOG(debug, false, "READ-I/O CPUERR");
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return CPUERR;
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uint16_t temp = CPUERR;
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if (!peek_only) DOLOG(debug, false, "READ-I/O CPUERR: %06o", temp);
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return temp;
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}
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if (a == ADDR_MICROPROG_BREAK_REG) { // microprogram break register
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if (!peek_only) DOLOG(debug, false, "READ-I/O micropgrogram break register (%06o)", microprogram_break_register);
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return microprogram_break_register;
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uint16_t temp = microprogram_break_register;
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if (!peek_only) DOLOG(debug, false, "READ-I/O micropgrogram break register: %06o", temp);
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return temp;
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}
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}
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@ -323,7 +356,7 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev,
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}
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if (tty_ && a >= PDP11TTY_BASE && a < PDP11TTY_END && !peek_only) {
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DOLOG(debug, false, "READ-I/O RL02 register %d", (a - RL02_BASE) / 2);
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DOLOG(debug, false, "READ-I/O TTY register %d", (a - PDP11TTY_BASE) / 2);
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return word_mode ? tty_->readByte(a) : tty_->readWord(a);
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}
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@ -332,13 +365,15 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev,
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constexpr uint32_t system_size = n_pages * 8192 / 64 - 1;
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if (a == ADDR_SYSSIZE + 2) { // system size HI
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if (!peek_only) DOLOG(debug, false, "READ-I/O accessing system size HI");
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return system_size >> 16;
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uint16_t temp = system_size >> 16;
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if (!peek_only) DOLOG(debug, false, "READ-I/O accessing system size HI: %06o", temp);
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return temp;
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}
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if (a == ADDR_SYSSIZE) { // system size LO
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if (!peek_only) DOLOG(debug, false, "READ-I/O accessing system size LO");
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return system_size;
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uint16_t temp = system_size;
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if (!peek_only) DOLOG(debug, false, "READ-I/O accessing system size LO: %06o", temp);
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return temp;
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}
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if (!peek_only) {
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@ -805,7 +840,7 @@ void bus::write(const uint16_t a, const bool word_mode, uint16_t value, const bo
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}
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if (a == ADDR_LFC) { // line frequency clock and status register
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DOLOG(debug, true, "WRITE-I/O set LFC/SR: %06o", value);
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DOLOG(debug, true, "WRITE-I/O set line frequency clock/status register: %06o", value);
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lf_csr = value;
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return;
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}
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