Sharp MZ-3500 User manual

MZ-3500
SERVICE MANUAL
CODE: OOZMZ 3500SM/E
PERSONALCOMPUTER
MODEL
Z-350
CONTENTS
1. Specifications 1
2. Software(Memory)Configuration 7
3.CPUand memory 12
4.CRT display 25
5.MFD interface 52
6. R232Cinterface 72
7. Printerinterface yg
8. Otherinterface 81
9. Power circuit description gy
10. Keyboardcontroller circuit discription 90
11. Selfcheckfunctions 94
12.IPL flow chart 103
13. Circuitdiagram & P.W.B
Parts list & Guide
SHARP CORPORATION

M 7 3500
1. SPECIFICATIONS
1-1. Specification ofthe main unit(Model 35XX)
Outline
1) High speed processing usingmulti-CPL'
2) Built in mini floppydisk
3) Built in printerinterface and RS232C Aerial interface
4) Connection ofuptotwo videodispla, mitt (separate graphic display or overlaiddisplay possible ontwo individual color
monitor units)
5) Permits theuseof standardCP/M
Model3530 incluse a single double-side,double density mini floppy
disk and64KB RAM.
ModelMZ3540 hastwo double-side, density mini floppy disks and
64KB RAM.
LSI
DISPLAY
MFD
Other I/F
Other
functions
Software
Accessories
CPU
MEMORY
I/O
MZ353X
MZ354X
Light pen
Keyboard
Printer
RS232C
Multi-CPU processing
ROM
RAM
Custom LSI
GDC
FDC
PIO
SIO
TIMER
CLOCK
Screen structure
Elements
Attribute
Colors
I/F
One double-side,
double density
floppy disk
Two double-side,
double density
floppy disks
IPL
C,G
For main CPU
For sub-CPU
Shared RAM
VIDEO
RAM
Memorymapper
Screen controller
CRT controller
Floppydiskcontroller
Parallel I/O port
Serial I/O port
Counter
Clock
Model 3531includes a single double side,
double density mini floppy disk and128KB
Model3541 hastwo double side, double
density mini floppy disks, and128KB
Z80A microprocessor x 2
8K Byte ROM
8K Byte ROM
64KBit DRAM x 16 chips or8 chips
16KBit SRAM x 4 chips
16KBit SRAM x 1 chip
16KB't SRAM x 1 chip
4KBit SRAM x 2 chips
TH SP6102R001
CSP-1 SP6102C002
CSP 2 SP6102C003
MPD7220
pPD765
8255
8251
8253
/iPD1990AC
80 characters x 25 lines. 80x 20,40x 25.or40x 20
8x 16,8x8
Reverse, blink, line (horizontal,vertical)
8 colors on eachcharacter and backgroundcolor
2 channels(applicable CRT640x 400, 640x 200, B/Wor color)
256 bytes/sector, 16 sectors/track, 80 tracks/disk
Built-in interface for optional MFD
Dedicatedkeyboard
Centronicsinterface
No protocol, asynchronus mode, 110to 9600 bps,half-duplex
Speaker (500mW)BatterybackupclockHALT SW Speaker volumecontrol
FDOS
CP/M
BASIC
Utilities
Basic CP/M
ExpandedCP/M
High class compatible with PC3200BASIC,supplemented and graphic
controlcommands
Expanded RS232C,GPIB, and GPIO
BACKUP, INIT, COPY,DEBUG, KILLALL
Intstruction Manual
master floppy disk
power cord

MZ3500
1-2.MZ-1K01(Keyboard) specification
Outline
Specification
MZ1K02U.S.keyboard (ASCII) MZ1K03:U.K.keyboard(ISO).
MZ1K04 German keyboard MZ1K05: Frenchkeyboard
LSI, 1C
Keys (98)
Interfacing cables
Other
Cabinet
Keyboard controller
CMOSIC
Sculpture key
Alphanumeric keys
Modeswitch
61
1
80C49 or 8749
4049x2,4514
Mechanicalcontactkey, with life of 10,000,000 operations.
Tenkey
15 Function keys 6 Definable keys 10
For datatransfer with theCPU (serial) and power supply (transmissionunder 15,000 baud)
Use of coiled cable with 8-pin DIN plug
Repeat function
Indicators (4 LED's)
Molded
Size (Wx H
Automatic repeatoccurs0.64secondsafter
.... . 2 Two-keyrollover
continuous depression ofthe samekey.
POWER, Alphanumeric keys
Color
xU
Officegray
467 x35x 190 Weight | About 1 .5kg (3.3 Ib)
Keyboard layout
Refer tothe page TIN "CIRCUIT DIAGRAM"
1-3.MZ-1U02
Outline
Specifications
Expansion unit forthe MZ-3500 series CPU,which canbe attached tothe rearside ofthe main unit.
Optional boards are plugged intothe expansion box.
The expansion box will accomodate upto four option boards.
Number of slots: 4 slots
Slot connector. 60-pin edge connector x 4
Area ofthe slot inserting option board: 140.5 x 140
Slot for option and slot number
MZ-1R06
(expansionRAM)
SFDI/F
ExpansionRS232C
GPIO
GPIB
(IEEE I/F)
Slot 1
o
o
o
o
Slot2
o
o
o
0
Slot 3
O
O
o
o
Slot 4
O
0
o
o
-2-

MZ3500
Expansion unit
Screw (1)
1-4.MZ-IR03
Outline
Specifications
Optionalboard used graphicdisplay functions with the Model-3500 series CPU. It includes32KB of RAM.
Itis inserted through the slot onthe front panel ofthePU.
The MZ-1U02 expansion boxisnot required.
LSI
Graphic functions
(Color must be
specified for each
dot.when the color
video unit isin use)
Software
GDC Graphic controller
Basic (buit-in)
vinrn HAM
Expansion
(optional)
~~~~~ — ____WDEO RAM
640x 200
green monitor
640x 200
color monitor
640 x 400
green monitor
640x 400
color monitor
BASIC graphic control statements
MPD7220
16KDRAM x 16 (32KB)
16KORAM x 32 (64KB)
32KB
(basic)
640x 200 dots
Two screens
_____
640x 400 dots
One screen
^______- — ~"
SDISP
ODISP
CHANGEDISP
GCOLOR
CLS
PSET
PRESET
LINE
GTABLE
CIRCLE
PAINT
GINPUT
GDISP
GPRINT
GREAD
CENTER
GCURSOR
GSCROL
SYMBOL
SCALE
96KB
(maximum expansion)
640x 200 dots
Six screens
640x 200 dots
Two screens
640x 400 dots
Three screens
640x 400 dots
One screen
Screen designation fortwo videounits.
Designation of output screen.
Modedesignation
Graphic pattern designation
Cleared bythe colorspecified.
Dotset
Dot reset
Line creation
Tablecreation
Circlecreation
Paintover
Input of graphicpattern
Display of graphicpattern
Output of graphicpattern on printer
Read of coordinates
Input of pattern within the specified area
Graphic cursorposition designation
Graphic screen scrolling
Graphic symboldisplaying
Scren scle-down designation
-3-

MZ3500
1-6. MZ-1R06
Outline
Specifications
Optionalboard for memoryexpantion ofthe MZ-3500 sries CPU.withthisoption the mainmemory(RAM) canbe expanded
uptoa maximum of256KB.
This option plug into the expantion boxin slot 1or3.
LSI
Memory and user
area
Basic
Expansion
64KDRAM x8 (64KBI
64KDRAM x8 (128KB)
Totalcapacity of
the main CPURAM
BASIC
(RAM
BASE
SYSTEM
: AREA
USER
' AREA
Main CPU only
128KB
•57KB
80KB
Use of MZ-1R06
192KB
«-
128KB
Using eight 64K RAM's
on theMZ-1R06
256KB
*-
208KB
- 4 -

MZ3500
1-7. MZ-1D07
Outline
Specifications
High resolution MZ 3500 series 12 green
Video tube
Display capacity
Display size
Input signals
Power supply
Cabinet
Adjustingknobs
Accessories
Type
monitor
Non glare green
Size
12", 90" deflection
Fluorescent color P39 (green, long PERSISTANCE)
Total number of
display characters
2,000 characters
(80 characters x 25 lines)Displaycapacity
640 horizontal dots,
400 verticallines
220x 145
Method
Horizontal
Separate input, TTL level
20 86kHz
29W powerconsumpt
MoldedColor
Size (Wx H x U
3
Vertical
47 8 Hz
ion
Office gray
324x310x356
Weight
7.2kg
Verticalsynchronization, contrast, brightness
CPU connection cable and power cord and Tilt stand
r
-5-

MZ3500
1-8. System configuration of Model3500
Keyboard
MZ-1K02
MZ-1K03
MZ-1K04
MZ-1K05
Printer '
IO2824E I
II
Option MFDI
I CE-331M |
II
"Model-3541 = Model-3531 + MZ-1F03
6

MZ3500
2. SOFTWARE(MEMORY)CONFIGURATION
Memory will be operatedunder four states of SDO ~ SD3,
depending onthe hardware and softwareconfigurations.
Inthe paragraphs to follow, description will be made for
those four states.
2-1. SDO (INITIALIZE STATE)
SDO can only exist immediatelyafterpower on,andthe
system executes IPL underthis condition and that the
system thusloaded will automatically assign memory area
for SD1,SD2. and SD3.
MAIN CPU
SUB CPU
MAS
MA2
MAI
MAO
FFFF
0
0
0
0
cooo
BFFF
8000
7FFF
RAMA
RAMA
RAMA
4000
3FFF i
| ROME [
I I
2000 I '
0
0
0
1
V
FFFF
RAMA
1
1
1
1
T
MS1
=° (D
MSO = 0 (L)
? IRAM(COM^
jOO1—— ^\
reoo1
\\
u
\\
\\
\\
N
v
V\
\
ROM
(SPAPE)
OFFF
0000
ROM
JPL
RAM (COM)
ROM
IPL
4000
27FF
2000
1 FFF
0000
*7

M7. 3500
Operational description
(1) Upon reset after power on,the main CPU loads the
contents ofthe initial program loader (IPL) into RAM
starting at address 4000H, duringwhichtime reset is
applied tothe sub-CPU.
TIMING OF RESET SIGNAL
Vtc-
SYSKES-
SKES-
pr)WFjJSUB
CPU
PO*E^
START
POWER
OFF
(2) The main CPU then terminates resetting thesubCPU
and starts the sub-CPU. Atthe same time, theROM
IPLis assigned tothe sub-CPU.
(3) The main CPU then send the memory allocation (state)
to SD1, and starts to load DOS from the system floppy
disk.
Signal generated from the
CR network and powersupply
Output signal from the main CPU port
MAIN CPU
START
a. Main CPU reset time
b. Main CPUIPL loadtime
Memory Map Data:
1. ROM-B is tested to determine if ROM's are present.
2.The ROM-IPLfunctionsunder control ofthe main CPU
at first, but later it functionsunder the sub-CPUafter
theIPL program has been loaded in RAM.
3. RAM-COM is shared by both the main CPUandthe sub-
CPU.
INITIALIZE FLOW «TABT
4. Memories other than described above cannot be accessed
under theSDO state.
5. Bank select,MAO~MA3, is used within the address range
ofCOOOH-FFFFH.

ROM-IPL
1.An8KBROM (2764 or mask ROM equivalent) is used
forthe ROM-IPL.
2. When the system reset signal turnsfrom lowto high
state after power on,the main CPU starts to operate At
this stage, the ROM-IPL is addressed.
3.TheCPU starts from address OOOOIROM address 10000)
4.The main CPU sets the sub-CPU reset signalfrom lowto
high state asit goes outofits initial state viathe memory
mapper andthe sub-CPU starts to operate. At this point,
the ROM-IPL is addressed bythe sub-CPU.
5. Address 0000 ofthe sub-CPU isROM address (0000)
The memory area above ROM address (1000) cannot
be used bythe sub-CPU because themamCPU initial
program has beenloaded there.
2-2. SD1 (SYSTEM LOADING & CP/M)
SD1 determines which operating system tsin use. The
system is loaded inthe CP/M (Control Program for Micro-
processors) mode.
MZ3500
Mam CPU logical address (during IPL operation)
Logical address ofthe sub-CPU
ROM physical address
OfFF
0800
0000
1 FFF
1 800
1 7FF
1 OOP
OFFF
0800
07FF
0000
1 FFF
1 800
I 7FF
1 OOP
OFFF
0800
07FF
0000
ROMIPL
MS1 = 0(L)
MSO=l(Hj
MAIN CPU
rr
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RAMicnu:
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RAMsn
RAMSA
KAM«.(IH)2000
1FFF
-9 -