Sharp MZ-800 - Joystick; 5 Powersupply

MZ-800
4-7. Joystick
It permits connection of two ATARI compatible joys-
ticks.
ADO
JOY
DT
DT
DT
DT
~
0
1
2
3
4
DT
DT
5
,l
Gl G2
-<1-
LS365
8255 >>- _____ ....,I't-..
PA4 V
I
1
,..
~
!
"3
4'
6
,..
'7
FWD
BACK
LEFT
RIGHT
TRGl
TRG2
4tWM
+ 5V
~GND
(Configuration of joystick-1)
Low active strobes are issued through PA4 (JOY1) of the
8255 and PA5 (JOY2) interrogate switch activation
through inputs to $FO (JOY1) and $F1 (JOY2).
5. Power supply
5-1. Block diagram
F
ACIN
Noise
filter
Rectifierl
filter
Power
switching
CCP
Drive
circuit
1---,
~--I---. I
I
I
SW I
I
'-------~~~--~I~ I
L ___ .J
2SW type only
Configuration of ATARI compatible joystick
4-8. System switch setup
System switches are assigned as follows:
i
Function
I
SW No. I I Setup method
+-------- ----L------------
I I
1
I . iON: MZ-700 mode
! MZ-700/MZ-8~ ""ct~':.""'_800 mod,
I
MZ printer with SW2
!
2
i
MZJCentronics printer I and SW3 at ON
3
selection
i
Centronics printer with
I
I
I
I
I I SW2 and SW3 at OFF
---,-----------4
I I Ch,"",d.o" to ,"-
4 External cassette recor- I bl d th
. . a e rea on e exter-
der polarity selection I d
I i na cassette recor er.
* Switch setups at the factory
SW1 ...... OFF (MZ-800 mode)
SW2 ...... ON
SW3 ...... ON
} (MZ dedicated printer)
SW4 ......
ON
Switching transformer
Pl ~ ~Sl __ ~---' +5 V
---. rectifierl
filter
P2
High
voltage
+5V
OV
Chassis
L---------------l Control
35