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RK05: statically sized read-buffer is not always large enough

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folkert van heusden 2023-03-23 21:38:42 +01:00
parent 69b2651bf7
commit 9eb9254c6e
Signed by untrusted user who does not match committer: folkert
GPG key ID: 6B6455EDFEED3BD1
3 changed files with 11 additions and 7 deletions
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6
CMakeLists.txt
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@ -34,9 +34,9 @@ add_executable(
include(CheckIPOSupported)
check_ipo_supported(RESULT supported)
set(CMAKE_BUILD_TYPE RelWithDebInfo)
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE)
#set(CMAKE_BUILD_TYPE Debug)
#set(CMAKE_BUILD_TYPE RelWithDebInfo)
#set(CMAKE_INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE)
set(CMAKE_BUILD_TYPE Debug)
set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)

11
rk05.cpp
View file

@ -27,8 +27,7 @@ rk05::rk05(const std::vector<disk_backend *> & files, bus *const b, std::atomic_
disk_read_acitivity(disk_read_acitivity),
disk_write_acitivity(disk_write_acitivity)
{
memset(registers, 0x00, sizeof registers );
memset(xfer_buffer, 0x00, sizeof xfer_buffer);
memset(registers, 0x00, sizeof registers);
fhs = files;
}
@ -129,12 +128,14 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
DOLOG(debug, true, "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 p = reclen;
for(size_t i=0; i<reclen; i++)
xfer_buffer[i] = b->readUnibusByte(memoff + i);
if (!fhs.at(device)->write(diskoffb, reclen, xfer_buffer))
DOLOG(ll_error, true, "RK05 pwrite error %s", strerror(errno));
DOLOG(ll_error, true, "RK05(%d) write error %s", device, strerror(errno));
if (v & 2048)
DOLOG(debug, true, "RK05 inhibit BA increase");
@ -151,6 +152,8 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
registers[(RK05_DA - RK05_BASE) / 2] = sector | (surface << 4) | (cylinder << 5);
delete [] xfer_buffer;
*disk_write_acitivity = false;
}
else if (func == 2) { // read
@ -158,6 +161,8 @@ void rk05::writeWord(const uint16_t addr, uint16_t v)
DOLOG(debug, true, "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];
int temp_diskoffb = diskoffb;
uint32_t temp = reclen;

1
rk05.h
View file

@ -28,7 +28,6 @@ class rk05
private:
bus *const b { nullptr };
uint16_t registers [ 7];
uint8_t xfer_buffer[512];
std::vector<disk_backend *> fhs;
std::atomic_bool *const disk_read_acitivity { nullptr };