Sharp MZ-3500 User Manual Page 83
- Page / 116
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
MZ3500
10. MZ1K01 KEYBOARD CONTROLLER CIRCUIT DESCRIPTION
10-1. Specification of keyboard control
1) Input Buffer
Capacity: 64 bytes
• Key-in data is written to the input buffer first, and is
supplied to the CPU, byte by byte.
• When an overflow is detected, the overflow code is
affired to the key-in data already sent, before being
sent to the CPU.
2) Rollover
• 2 key rollover (exemption in the CTRL mode)
(Entry of the second key depression can be accepted
even if more than one key is pressed at same time.)
• Simultaneous depression of more than three keys is
ingnored.
3) Key bounce
15msec (Key spec is 5-10msec)
(Indicates unstable state as shown in Fig. 3-2 that key
signal does not turn off immediately after releasing of
finger from the key.)
4) Key
5msec (norma), 20msec (max),
15msec (allows for key bounce)
5) DEF Key
Twenty definable keys are available in combination with
the CTRL key.
[
DFK1-DFK10
---------------------
(DEF1A-DEF10A)
DEF1-DFK10 in conjunction with the CTRL key
- - - (DEFIB-DEF10B)-
----------
(DEF1B-DBF10B)
6) Handling of functional symbols and graphic symbols
See the code table.
7) Use of the CTRL key to discriminate RUN and CONT of
the DEB key.
Push the DEB in conjunction with the CTRL key to
start running.
8) Handling of special codes
COPY command: CTRL j 1 | (ten key)
Escape
---------------
CTRL |Ci^
BRK
--------------------
CTRL I CONT]
11) One-step commands
CMD 1 •
CMD 2
CMD3
CMD 4
CMD 5 ■
CMD 6 •
CMD 7
CMD 8
CMD 9 •
CMDO
CMD A
CMDC
CMD D
CMD F
CMD K
CMD L
CMDO
CMD R
CMD S
CMD U
DISP
PRINT
INPUT
USING
IMAGE
GOTO
GOSUB
RETURN
LIST
SEND
AUTO
CLOSE
DATA
RFORMAT#
KEY IN
LOAD
OPEN
READ
SAVE
CURSOR
12) Mode indication on LED
ASCII
LOCK
13) REP
Key repetition will take place when a key depressed for
more than 0.64 second. Entry of other keys is permitted
during key repetition. When two keys are depressed at
the same time, an alternate key entry will not be
accepted. This rule does not apply to simultaneous
depression of more than three keys.
9) PRO/OP
Sent to the CPU after power on and when PRO/OP is
changed.
10) HOME key
CTRL HOME] Returns home after clearing the
_____
display screen.
HOME Only the cursor returns home.
- 90
- SERVICE MANUAL 1
- 1. SPECIFICATIONS 2
- Keyboard layout 3
- 1-3. MZ-1U02 3
- 1-4. MZ-IR03 4
- 1-6. MZ-1R06 5
- 1-7. MZ-1D07 6
- 2-1. SDO (INITIALIZE STATE) 8
- MAIN CPU 8
- M* )S V 1 M/} 9
- MZS.'tOO 10
- 2.3. SD2 (ROM based BASIC) 11
- Operational description 12
- 3. CPU AND MEMORY 13
- L© 'MTR ! 14
- 3-3. Sub CPU and I/O port 15
- 1) Block diagram 16
- ‘ VK IN MEMCKT MM I Mf 20
- 4. CRT DISPLAY 22
- X 25 lines screen.) 24
- For Model 3200 senes 26
- 4-2. Video RAM 27
- 5) Synchronize signal timing 30
- X : Y - 1 : 2 30
- X : Y : 1 : 1 31
- 'iBK byte 32
- (option I) 32
- 48K byte 32
- (option tl) 32
- M Z 3500 34
- CSP 2 Block Diagram 37
- 20 GND IN 38
- ASCII C.G. Structure 40
- 4 9. VSYNC 41
- ARIO = HI 42
- > FIFO Empty? 44
- [Explanation] 45
- Straight line drawing 46
- Whereas 46
- 5. MFD INTERFACE 47
- ^ 0 ^ 0 1 49
- 8) Data write procedure 50
- 5^. FDC (UPD765) 52
- UPD765 signal description 53
- 5-5. Data recording method 54
- <ITE DATA 55
- Write pulse [] fl d fl R 56
- Polarity inversion 56
- +5V RtAD DATA 57
- M -- 3.1 58
- ©"T 58
- Advanced 59
- Does not trace i l^is 59
- 5-11. Media format 60
- (Bbyles) 61
- 02 0\ FF FF 62
- ( 2KX 152 = 304K ) 63
- Stop bit 64
- 6-4. System switch functions 65
- 6-5. 8251AC controls 65
- 2) Data output control 66
- 3) Data input control 67
- 7-D0C># 68
- 3iil>CPU of Ni^ 70
- <i> 71
- 7 4. Data transfer timing 72
- 7-6. I/O port map 73
- 8. OTHER INTERFACES 74
- -<3 ri> 75
- MZ,"500 76
- DIP SW(A) 79
- 1. BLOCK DIAGRAM 80
- A. +5V and +12V supplies 80
- M 7,3500 81
- 3. Alarm circuit 82
- DESCRIPTION 83
- 10-2. Key search timing 84
- JLJl_JlJT_ri_rLJl 85
- Power ON 86
- START (5mS) 86
- 11. SELF CHECK FUNCTIONS 87
- CD SDO bank alternation error 88
- 11-2. Sub-CPU side 89
- .8 test the 90
- 20 lines 90
- /<.y ^ Jf -y > K W 91
- 8) ROM-IPL 92
- S3Si-54Kl=-.*- • 93
- 12. IPL FLOW CHART 96
- MAIN CPU IPL FLOW CHART 2/2 97
- 12 2. SUB CPU IPL FLOW CHART 98
- ■ I I Y Y TV 99
- IjJliJlJjljJljJLllLljLLJ 99
- LlJ LiJ LiJ Lei LiJ LLl LiJ 99
- LJLeJ'LDliJLiJLLjLJLiJ 99
- Pi co vO co fO Pi 100
- Ч Г ^n UO 100
- ¿. ^ О 101
- Û. CM Û 101
- GUIDE LIST 102
- I'l Exteriors 103
- 1 Exteriors 104
- PWB & Fixing angles 105
- [3 Connector 106
- [4] Others 107
- 5 CPU PWB 107
- 5I CPU PWB 108
- U Power supply unit 108
- [6j Power supply unit 109
- П MZ1R06 (RAM board) 111
- SHARP CORPORATION 116
- Industrial Instruments Group 116
© 2020, manymanuals.com. All rights reserved. | 1.893 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals