Sharp MZ-350C User manual

MZ-3500
SERVICEMANUAL
CODE: OOZMZ 3500SM/E
rC
PERSONALCOMPUTER
MODEL
MZ-350C
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 7g
8. OtherInterface 81
9. Power Circuit discription 37
10. KeyboardControllerCircuit discription QQ
11. Seif checkfunctions 94
12.IPL flow chart 103
13. Circuit diagram & P.W.B
Parts list & Guide
SHARP CORPORATION

M Z 3500
1.SPECIFICATIONS
1-1. Specification ofthe main unit (Model35XX)
Outline
1) High speed processing usingmulti-CPU
2) Built-in mini floppy disk
3) Built-in printer interface and RS232Cserialinterface
4) Connection ofuptotwo Videodisplav >nits (separate graphicdisplay or overlaid display possible ontwo individualcolor
monitor units)
5) Permits theuseof StandardCP/M
Model3530 incluse a singledouble-side,doubledensity mini floppy
disk and64KB RAM.
Model MZ3540 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-CPUprocessing
ROM
RAM
Custom LSI
GDC
FDC
RIO
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
Floppy diskController
Parallel I/O port
Serial I/O port
Counter
Clock
Model3531includes a single double-side,
doubledensity mini floppy disk and128KB.
Model3541 hastwo double-side,double
density mini floppy disks, and128KB.
Z80Amicroprocessor 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
16KBit SRAM x 1 chip
4KBit SRAM x 2 Chips
TH SP6102R001
CSP-1 SP6102C002
CSP-2 SP6102C003
MPD7220
pPD765
8255
8251
8253
/JPD1990AC
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(applicableCRT: 640x 400, 640x 200, B/Wor color).
256 bytes/sector, 16 sectors/track, 80 tracks/disk
Built-in interface for optional MFD.
Oedicatedkeyboard
Centronicsinterface
No protocol. asynchronus mode, 110to 9600 bps,half-duplex
Speaker (500mW)Battery backup Clock HALT SW Speaker volumecontrol
FDOS
CP/M
BASIC
Utilities
Basic CP/M
ExpandedCP/M
High class compatible with PC3200BASIC,supplemented and graphic
control commands
Expanded RS232C, GPIB, and GPIO
BACKUP, INIT, COPY,DEBUG. KILLALL
Intstruction Manual
master floppy disk
power cord
O

M Z 3500
1-2. MZ-1K01 (Keyboard) specification
Outline
Specification
MZ1K02:U.S.keyboard(ASCII) MZ1K03: U.K.keyboard(ISO).
MZ1K04:Germankeyboard MZ1K05: Frenchkeyboard
LSI, IC
Keys (98)
Interfacing cables
Other
Cabinet
KeyboardController
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 Definablekeys 10
For datatransfer with theCPU (serial) and power supply (transmission under 15,000 baud)
Use of coiled cable with 8-pin DIN plug
Repeat function
Indicators (4 LED's)
Molded
Size (Wx H
Automatic repeat occurs 0.64secondsafter
.... , 2 Two-keyrollover
contmuousdepression ofthe same key.
POWER, Alphanumeric keys
Color
xL)
Office gray
467x 35x 190
Weight | About 1 .5kg (3.3 Ib)
Keyboard layout
Refer tothe page 7 IN "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 slotinserting 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
0
-2-

MZ3500
Expansion unit
Screw (2)
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-1U02expansion 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 RAM -
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)
16KDRAM x 32 (64KB)
32KB
(basic)
640x 200 dots
Two screens
______ — - ~
640x 400 dots
One screen
___—
SDISP
ODISP
CHANCEDISP
GCOLOR
CLS
PSET
PRESET
LINE
GTABLE
CIRCLE
PAINT
GINPUT
GDISP
GPRINT
GREAD
GENTER
GCURSOR
GSCROL
SYMBOL
SCALE
96KB
(maximumexpansion)
640x 200 dots
Six screens
640x 200 dots
Two screens
640x 400 dots
Three screens
640x 400 dots
One screen
Screen designation fortwo videounits.
Oesignation of Output screen.
Modedesignation
Graphic pattern designation
Cleared bythe colorspecified.
Dotset
Oot 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 Cursor Positiondesignation
Graphic screen scrolling
Graphic symboldisplaying
Seren scle-down designation
(
-3-

M Z 3500
1-6. MZ-1R06
Outline
Specifications
Optionalboard for memoryexpantion ofthe MZ-3500 sries CPU.withthis Option the mainmemory(RAM) canbe expanded
uptoa maximum of256KB.
This Optionplug into the expantion boxin slot 1or3.
LSI
Memory and user
area
Basic
Expansion
64KDRAM x 8 (64KB)
64KDRAM x8 (128KB)
Total capacity of
the main CPURAM
BASIC
(RAM
BASE)
SYSTEM
AREA
USER
AREA
Main CPU only
128KB
•57KB
80KB
Useof 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 monitor
Videotube
Displaycapacity
Display size
Input Signals
Powersupply
Cabinet
Adjusting knobs
Accessories
Type
Non-glaregreenSize12".
90° deflection
Fluorescent color P39 (green, long PERSISTANCE)
Total number of
displaycharacters
2,000 characters
(80 characters x 25 lines)
Display capacity
640 horizontal dots,
400 Verticallines
220x 145
Method
Horizontal
Separate input, TTL level
20.86kHz Vertical
47.8 Hz
29W power consumption
Molded
Color
Size (Wx H x L)
3
Officegray
324x310x356
Weight 7.2kg
Vertical synchronization, contrast, brightness
CPU connection cable and power cord andTut stand
c

MZ3500
1-8. System configuration of Model3500
Keyboard
M2-1K02
MZ-1K03
MZ-1K04
MZ-1K05
1
1
Printer '
I02824E l
|
l OptionMFDl
l CE-331M |
ll
*Model-3541 = Model-3531 + MZ-1F03
-6-

M Z 3500
2. SOFTWARE(MEMORY)CONFIGURATION
Memory will be operatedunder four states of SDO ~ SD3,
depending onthe hardware and Software configurations.
Inthe paragraphs to follow, description will be made for
those four states.
2-1. SDOUNITIALIZESTATE)
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
17 p 171?
r r r r
{,
/
cooo
BFFF
]
/
8000
7 FFF
J
/
4000
3FFF
1
0
0
0
0
1
RAMA
4
RAMA
3
RAMA
2
1
1
ROMB ]
1
0 1
01
01
11
— 1 T FFFF T
]l |RAM(COM)f
:nAn 1 i
tiOO ^\
\
RAMA
J1
MSI =0(L)
MSO = 0 (L)
2000
OFFF
0000
l J
v
A
\\
\\
\\
U
\\
\\
\\
\\
\\
\\
ROM
(SPÄHE)
ROM
IPL
ROM
IPL
4000
27 FF
l FFF
0000

M Z 3500
Operational description
(1) Upon reset after power on,the main CPU loads the
contents ofthe initial programloader(IPL) into RAM
starting at address 4000H, during which time reset is
applied tothe sub-CPU.
TIMING OF RESET SIGNAL
Vcc-
SYSRES-
SRES-
•*
I l
pnwFRISUB
CPU
P°*E*<
START
l
l
POWER
OFF
(2)The main CPU then terminates resetting the sub-CPU
and Starts the sub-CPU. Atthe same time, the ROM-
IPLis assigned tothe sub-CPU.
(3)The main CPU thensend the memoryallocation (state)
to SD1. and Starts to load DOS from the System floppy
disk.
Signal generated from the
CR network and power supply.
Output Signal from the main CPU port.
MAIN CPU
START
a. Main CPU reset time
b. Main CPUIPL load time
Memory Map Data:
1. ROM-B is tested to determine if ROM's are present.
2.The ROM-IPL functions under control ofthe main CPU
at first, but later it functions under the sub-CPU after
theIPL program has been loaded in RAM.
3. RAM-COM is shared by both the main CPUandthe sub-
CPU.
INITIALIZE FLOW
4. Memories other than describedabove cannot be accessed
under theSDO state.
5. Bankselect, MAO~MA3, is used within the address ränge
ofCOOOH-FFFFH.
-

ROMIPL
1.An8KBROM (2764 or mask ROM equivalent) is used
forthe ROM-IPL.
2. When the system reset signalturns from Iowto high
state after power on,the main CPU Starts to operate. At
thisstage, the ROM-IPL is addressed.
3.TheCPU Starts from address 0000(ROM address 10000).
4.The main CPU sets the sub-CPU reset signal from Iowto
high state äs itgoes 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 areaabove ROM address (1000) cannot
be used bythe sub-CPUbecause the main CPU initial
program has beenloaded there.
'
2-2. SD1 (SYSTEM LOADING & CP/M)
SD1 determines which operating system isin use. The
system is loaded inthe CP/M (Control Program for Micro-
processors) mode.
MZ3500
Main CPU logical address (during IPL Operation)
Logical address ofthe sub-CPU
I
ROM physical address
i
OFFF
0800
07 FF
0000
X
V
1 FFF
1 800
17 FF
1 000
OFFF
0800
07FF
0000
1 FFF
1 800
17FF
1 000
OFFF
0800
07FF
0000
8F
\
'
ROMIPL
.B
MS1=0(L)
WSO=1(H)
SUB CPU
rr r r
/
F7
(
FF
;'if i ( i
RAM (KM
4
3
k
\
» \
x
\
V
- 9 -