Sharp MZ-800 - Page 151

(4) Programmable sound generator (76489)
The MZ-800 has a built-in programmable sound generator (PSG) which can generate 3-tone chords
over 8 octaves,
I/O port address $F2 is assigned to the PSG. For details on controlling the PSG, see Appendix B.
DO-D7> > LM 386
(amplifier)
3.55 MHz
(BUS¢)
WR
CE
(8253)0UTO
CPU WAIT :
(5) Printer interface (Z-80A PIO)
The MZ-800 uses a Z-80A PIO for the printer interface.
I/O port addresses FC to $FF are assigned to the HO. pa
SFC: Control register govi Yh 4" 4F * °
$FD: Control register
$FE: Port A
PAO, PAI: printer status (in) : F 7
PA4, PAS: system status (in) : vert #
PA6, PA7: printer control (out)
SFF: Port B
Printer data (out)
DATA BUS
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