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Started resetting 'busy' when entering the result phase. AMSDOS now complains of a missing disk after failing to find sector 01. My belief is that it should end up asking for C1. So this is not even getting through a failure to find a sector correctly yet.

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This commit is contained in:
Thomas Harte 2017-08-06 19:48:17 -04:00
parent c839556a27
commit b5ec1f42d5
1 changed files with 9 additions and 6 deletions
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15
Components/8272/i8272.cpp
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@ -17,10 +17,10 @@ const uint8_t StatusRQM = 0x80; // Set: ready to send or receive from processor.
const uint8_t StatusDIO = 0x40; // Set: data is expected to be taken from the 8272 by the processor.
const uint8_t StatusNDM = 0x20; // Set: the execution phase of a data transfer command is ongoing and DMA mode is disabled.
const uint8_t StatusCB = 0x10; // Set: the FDC is busy.
const uint8_t StatusD3B = 0x08; // Set: drive 3 is seeking.
const uint8_t StatusD2B = 0x04; // Set: drive 2 is seeking.
const uint8_t StatusD1B = 0x02; // Set: drive 1 is seeking.
const uint8_t StatusD0B = 0x01; // Set: drive 0 is seeking.
//const uint8_t StatusD3B = 0x08; // Set: drive 3 is seeking.
//const uint8_t StatusD2B = 0x04; // Set: drive 2 is seeking.
//const uint8_t StatusD1B = 0x02; // Set: drive 1 is seeking.
//const uint8_t StatusD0B = 0x01; // Set: drive 0 is seeking.
}
i8272::i8272(Cycles clock_rate, int clock_rate_multiplier, int revolutions_per_minute) :
@ -209,7 +209,7 @@ void i8272::posit_event(int event_type) {
}
read_data:
printf("Read data, sector %02x\n", command_[4]);
printf("Read data, sector %02x %02x %02x %02x\n", command_[2], command_[3], command_[4], command_[5]);
main_status_ |= StatusCB;
if(!dma_mode_) main_status_ |= StatusNDM;
set_drive(drives_[command_[1]&3].drive);
@ -220,6 +220,7 @@ void i8272::posit_event(int event_type) {
FIND_HEADER();
if(!index_hole_limit_) goto read_data_not_found;
READ_HEADER();
printf("Comparing with %02x\n", header_[2]);
if(header_[2] != command_[4]) goto find_next_sector;
printf("Unimplemented!!\n");
@ -338,8 +339,10 @@ void i8272::posit_event(int event_type) {
goto wait_for_command;
post_result:
// Set ready to send data to the processor, no longer in [non-DMA] execution phase.
main_status_ |= StatusRQM | StatusDIO;
main_status_ &= ~StatusNDM;
main_status_ &= ~(StatusNDM | StatusCB);
WAIT_FOR_EVENT(Event8272::ResultEmpty);
main_status_ &= ~StatusDIO;
goto wait_for_command;