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write in 512 bytes blocks

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folkert van heusden 2024-04-17 11:56:32 +02:00
parent 285316fd9b
commit a386e9aa03
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
2 changed files with 28 additions and 21 deletions
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44
rk05.cpp
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@ -138,32 +138,40 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
DOLOG(debug, false, "RK05 drive %d position sec %d surf %d cyl %d, reclen %zo, WRITE to %o, mem: %o", device, sector, surface, cylinder, reclen, diskoffb, memoff);
uint8_t *xfer_buffer = new uint8_t[reclen]();
uint32_t work_reclen = reclen;
uint32_t work_memoff = memoff;
uint32_t work_diskoffb = diskoffb;
for(size_t i=0; i<reclen; i++)
xfer_buffer[i] = b->readUnibusByte(memoff + i);
assert(sizeof(xfer_buffer) == 512);
if (!fhs.at(device)->write(diskoffb, reclen, xfer_buffer))
DOLOG(ll_error, true, "RK05(%d) write error %s", device, strerror(errno));
while(work_reclen > 0) {
uint32_t cur = std::min(uint32_t(sizeof xfer_buffer), work_reclen);
work_reclen -= cur;
if (v & 2048)
DOLOG(debug, false, "RK05 inhibit BA increase");
else
update_bus_address(reclen);
for(size_t i=0; i<cur; i++)
xfer_buffer[i] = b->readUnibusByte(work_memoff++);
// TODO ^ in blocks of 512 bytes to keep this admin correct:
if (++sector >= 12) {
sector = 0;
if (++surface >= 2) {
surface = 0;
cylinder++;
if (!fhs.at(device)->write(work_diskoffb, cur, xfer_buffer))
DOLOG(ll_error, true, "RK05(%d) write error %s", device, strerror(errno));
work_diskoffb += cur;
if (v & 2048)
DOLOG(debug, false, "RK05 inhibit BA increase");
else
update_bus_address(cur);
if (++sector >= 12) {
sector = 0;
if (++surface >= 2) {
surface = 0;
cylinder++;
}
}
}
registers[(RK05_DA - RK05_BASE) / 2] = sector | (surface << 4) | (cylinder << 5);
delete [] xfer_buffer;
*disk_write_acitivity = false;
}
else if (func == 2) { // read
@ -171,8 +179,6 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
DOLOG(debug, false, "RK05 drive %d position sec %d surf %d cyl %d, reclen %zo, READ from %o, mem: %o", device, sector, surface, cylinder, reclen, diskoffb, memoff);
uint8_t xfer_buffer[512] { 0 };
uint32_t temp_diskoffb = diskoffb;
uint32_t temp = reclen;

5
rk05.h
View file

@ -27,9 +27,10 @@ class bus;
class rk05
{
private:
bus *const b { nullptr };
uint16_t registers [7];
bus *const b { nullptr };
uint16_t registers [7] { 0 };
std::vector<disk_backend *> fhs;
uint8_t xfer_buffer[512] { 0 };
std::atomic_bool *const disk_read_acitivity { nullptr };
std::atomic_bool *const disk_write_acitivity { nullptr };