6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-07-04 18:29:40 +00:00
Code Issues Projects Releases Wiki Activity

Increased logging by quite a distance and made an attempt once again to allow the processor some time to supply the first byte when writing before declaring overrun.

Browse Source
This commit is contained in:
Thomas Harte 2017-08-15 10:50:28 -04:00
parent 0972f19fc5
commit 7d132f81f7
1 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
Components/8272/i8272.cpp
View File

@ -315,12 +315,12 @@ void i8272::posit_event(int event_type) {
// values in the internal registers.
index_hole_limit_ = 2;
set_data_mode(DataMode::Scanning);
// printf("Seeking %02x %02x %02x %02x\n", cylinder_, head_, sector_, size_);
printf("Seeking %02x %02x %02x %02x\n", cylinder_, head_, sector_, size_);
find_next_sector:
FIND_HEADER();
if(!index_hole_limit_) {
// Two index holes have passed wihout finding the header sought.
// printf("Not found\n");
printf("Not found\n");
SetNoData();
goto abort_read_write;
}
@ -329,17 +329,18 @@ void i8272::posit_event(int event_type) {
// This implies a CRC error in the header; mark as such but continue.
SetDataError();
}
// printf("Considering %02x %02x %02x %02x\n", header_[0], header_[1], header_[2], header_[3]);
printf("Considering %02x %02x %02x %02x\n", header_[0], header_[1], header_[2], header_[3]);
if(header_[0] != cylinder_ || header_[1] != head_ || header_[2] != sector_ || header_[3] != size_) goto find_next_sector;
// Branch to whatever is supposed to happen next
// printf("Proceeding\n");
printf("Proceeding\n");
switch(command_[0] & 0x1f) {
case 0x06: // read data
case 0x0c: // read deleted data
goto read_data_found_header;
case 0x05: // write data
goto write_data_found_header;
case 0x09: // write deleted data
goto write_data_found_header;
}
@ -351,7 +352,7 @@ void i8272::posit_event(int event_type) {
// Performs the read data or read deleted data command.
read_data:
printf("Read data [%02x %02x %02x %02x ... %02x]\n", command_[2], command_[3], command_[4], command_[5], command_[8]);
printf("Read [deleted] data [%02x %02x %02x %02x ... %02x]\n", command_[2], command_[3], command_[4], command_[5], command_[8]);
if(!dma_mode_) SetNonDMAExecution();
SET_DRIVE_HEAD_MFM();
read_next_data:
@ -419,7 +420,7 @@ void i8272::posit_event(int event_type) {
goto post_st012chrn;
write_data:
printf("Write [deleted] data\n");
printf("Write [deleted] data [%02x %02x %02x %02x ... %02x]\n", command_[2], command_[3], command_[4], command_[5], command_[8]);
if(!dma_mode_) SetNonDMAExecution();
SET_DRIVE_HEAD_MFM();
@ -438,7 +439,6 @@ void i8272::posit_event(int event_type) {
SetDataDirectionFromProcessor();
SetDataRequest();
WAIT_FOR_EVENT(Event::DataWritten);
expects_input_ = true;
distance_into_section_ = 0;
@ -462,6 +462,11 @@ void i8272::posit_event(int event_type) {
WAIT_FOR_EVENT(Event::DataWritten);
end_writing();
if(sector_ != command_[6] && !ControlMark()) {
sector_++;
goto write_next_data;
}
goto post_st012chrn;
// Performs the read ID command.