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pdr/par byte-addressing

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folkert van heusden 2022-04-10 12:18:56 +02:00
parent e9822fe116
commit 845d1acfb8
1 changed files with 110 additions and 80 deletions
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178
bus.cpp
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@ -101,64 +101,62 @@ uint16_t bus::read(const uint16_t a, const bool word_mode, const bool use_prev)
if (a >= 0172200 && a < 0172220) {
uint16_t t = pages[001][((a & 017) >> 1)].pdr;
D(fprintf(stderr, "read supervisor I PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172220 && a < 0172240) {
else if (a >= 0172220 && a < 0172240) {
uint16_t t = pages[001][((a & 017) >> 1) + 8].pdr;
D(fprintf(stderr, "read supervisor D PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172240 && a < 0172260) {
else if (a >= 0172240 && a < 0172260) {
uint16_t t = pages[001][((a & 017) >> 1)].par;
D(fprintf(stderr, "read supervisor I PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172260 && a < 0172300) {
else if (a >= 0172260 && a < 0172300) {
uint16_t t = pages[001][((a & 017) >> 1) + 8].par;
D(fprintf(stderr, "read supervisor D PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172300 && a < 0172320) {
else if (a >= 0172300 && a < 0172320) {
uint16_t t = pages[000][((a & 017) >> 1)].pdr;
D(fprintf(stderr, "read kernel I PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172320 && a < 0172340) {
else if (a >= 0172320 && a < 0172340) {
uint16_t t = pages[000][((a & 017) >> 1) + 8].pdr;
D(fprintf(stderr, "read kernel D PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172340 && a < 0172360) {
else if (a >= 0172340 && a < 0172360) {
uint16_t t = pages[000][((a & 017) >> 1)].par;
D(fprintf(stderr, "read kernel I PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0172360 && a < 0172400) {
else if (a >= 0172360 && a < 0172400) {
uint16_t t = pages[000][((a & 017) >> 1) + 8].par;
D(fprintf(stderr, "read kernel D PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0177600 && a < 0177620) {
else if (a >= 0177600 && a < 0177620) {
uint16_t t = pages[003][((a & 017) >> 1)].pdr;
D(fprintf(stderr, "read userspace I PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0177620 && a < 0177640) {
else if (a >= 0177620 && a < 0177640) {
uint16_t t = pages[003][((a & 017) >> 1) + 8].pdr;
D(fprintf(stderr, "read userspace D PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0177640 && a < 0177660) {
else if (a >= 0177640 && a < 0177660) {
uint16_t t = pages[003][((a & 017) >> 1)].par;
D(fprintf(stderr, "read userspace I PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
if (a >= 0177660 && a < 0177700) {
else if (a >= 0177660 && a < 0177700) {
uint16_t t = pages[003][((a & 017) >> 1) + 8].par;
D(fprintf(stderr, "read userspace D PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
return word_mode ? (a & 1 ? t >> 8 : t & 255) : t;
}
///////////
@ -368,8 +366,10 @@ uint16_t bus::write(const uint16_t a, const bool word_mode, uint16_t value, cons
int run_mode = c->getPSW() >> 14;
if (a >= 0160000) {
if (word_mode)
if (word_mode) {
assert(value < 256);
D(fprintf(stderr, "WRITE I/O %06o in byte mode\n", a);)
}
if (word_mode) {
if (a == 0177776 || a == 0177777) { // PSW
@ -507,69 +507,99 @@ uint16_t bus::write(const uint16_t a, const bool word_mode, uint16_t value, cons
/// MMU ///
// supervisor
if (a >= 0172200 && a < 0172220) {
uint16_t t = pages[001][((a & 017) >> 1)].pdr = value;
D(fprintf(stderr, "write supervisor I PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
if (a >= 0172200 && a < 0172240) {
bool is_d = a & 16;
if (word_mode) {
a & 1 ? (pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr &= 0xff, pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr |= value << 8) :
(pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr &= 0xff00, pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr |= value);
}
if (a >= 0172220 && a < 0172240) {
uint16_t t = pages[001][((a & 017) >> 1) + 8].pdr = value;
D(fprintf(stderr, "write supervisor D PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
else {
pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr = value;
}
if (a >= 0172240 && a < 0172260) {
uint16_t t = pages[001][((a & 017) >> 1)].par = value;
D(fprintf(stderr, "write supervisor I PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
D(fprintf(stderr, "write supervisor %c PDR for %d: %o\n", is_d ? 'D' : 'I', (a & 017) >> 1, value);)
return value;
}
if (a >= 0172260 && a < 0172300) {
uint16_t t = pages[001][((a & 017) >> 1) + 8].par = value;
D(fprintf(stderr, "write supervisor D PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
if (a >= 0172240 && a < 0172300) {
bool is_d = a & 16;
if (word_mode) {
a & 1 ? (pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].par &= 0xff, pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].par |= value << 8) :
(pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].par &= 0xff00, pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].par |= value);
}
else {
pages[001][((a & 017) >> 1) + (is_d ? 8 : 0)].par = value;
}
D(fprintf(stderr, "write supervisor %c PAR for %d: %o\n", is_d ? 'D' : 'I', (a & 017) >> 1, value);)
return value;
}
// kernel
if (a >= 0172300 && a < 0172320) {
uint16_t t = pages[000][((a & 017) >> 1)].pdr = value;
D(fprintf(stderr, "write kernel I PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
if (a >= 0172300 && a < 0172340) {
bool is_d = a & 16;
if (word_mode) {
a & 1 ? (pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr &= 0xff, pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr |= value << 8) :
(pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr &= 0xff00, pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr |= value);
}
if (a >= 0172320 && a < 0172340) {
uint16_t t = pages[000][((a & 017) >> 1) + 8].pdr = value;
D(fprintf(stderr, "write kernel D PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
else {
pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr = value;
}
if (a >= 0172340 && a < 0172360) {
uint16_t t = pages[000][((a & 017) >> 1)].par = value;
D(fprintf(stderr, "write kernel I PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
D(fprintf(stderr, "write kernel %c PDR for %d: %o\n", is_d ? 'D' : 'I', (a & 017) >> 1, value);)
return value;
}
if (a >= 0172360 && a < 0172400) {
uint16_t t = pages[000][((a & 017) >> 1) + 8].par = value;
D(fprintf(stderr, "write kernel D PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
if (a >= 0172340 && a < 0172400) {
bool is_d = a & 16;
if (word_mode) {
a & 1 ? (pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].par &= 0xff, pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].par |= value << 8) :
(pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].par &= 0xff00, pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].par |= value);
}
else {
pages[000][((a & 017) >> 1) + (is_d ? 8 : 0)].par = value;
}
D(fprintf(stderr, "write kernel %c PAR for %d: %o\n", is_d ? 'D' : 'I', (a & 017) >> 1, value);)
return value;
}
// user
if (a >= 0177600 && a < 0177620) {
uint16_t t = pages[003][((a & 017) >> 1)].pdr = value;
D(fprintf(stderr, "write userspace I PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
if (a >= 0177600 && a < 0177640) {
bool is_d = a & 16;
if (word_mode) {
a & 1 ? (pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr &= 0xff, pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr |= value << 8) :
(pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr &= 0xff00, pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr |= value);
}
if (a >= 0177620 && a < 0177640) {
uint16_t t = pages[003][((a & 017) >> 1) + 8].pdr = value;
D(fprintf(stderr, "write userspace D PDR for %d: %o\n", (a & 017) >> 1, t);)
return t;
else {
pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].pdr = value;
}
if (a >= 0177640 && a < 0177660) {
uint16_t t = pages[003][((a & 017) >> 1)].par = value;
D(fprintf(stderr, "write userspace I PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
D(fprintf(stderr, "write user %c PDR for %d: %o\n", is_d ? 'D' : 'I', (a & 017) >> 1, value);)
return value;
}
if (a >= 0177660 && a < 0177700) {
uint16_t t = pages[003][((a & 017) >> 1) + 8].par = value;
D(fprintf(stderr, "write userspace D PAR for %d: %o\n", (a & 017) >> 1, t);)
return t;
if (a >= 0177640 && a < 0177700) {
bool is_d = a & 16;
if (word_mode) {
a & 1 ? (pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].par &= 0xff, pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].par |= value << 8) :
(pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].par &= 0xff00, pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].par |= value);
}
else {
pages[003][((a & 017) >> 1) + (is_d ? 8 : 0)].par = value;
}
D(fprintf(stderr, "write user %c PAR for %d: %o\n", is_d ? 'D' : 'I', (a & 017) >> 1, value);)
return value;
}
////