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Diffstat (limited to 'src/devices/bus/a800/atari810.cpp')
-rw-r--r-- | src/devices/bus/a800/atari810.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/devices/bus/a800/atari810.cpp b/src/devices/bus/a800/atari810.cpp index 6967d641753..69b5bd09d2f 100644 --- a/src/devices/bus/a800/atari810.cpp +++ b/src/devices/bus/a800/atari810.cpp @@ -4,6 +4,14 @@ Atari 810 Disk Drive + The 810 is the original 5ΒΌ" floppy disk interface for the Atari 400/800 + computer, supporting only a 709-sector single density format. + + The built-in drive mechanism uses a four-phase stepper motor which is + controlled by outputs to a PIA port rather than by the WD1771-01 FDC. + The PIA also generates a synthetic index pulse for the FDC. (The format + defines the undersized 19th sector of each track as the index area.) + ***************************************************************************/ #include "emu.h" |