Title: Interface SF-7017 - Site Internet de Patrick Lafarguette

May 12, 2017 - O2. 6. O3. 7. U2A. 74LS139. VCC. I/O chip select. ROM/RAM chip select. SC3000 connector. Power. Decoupling capacitors. READY/BUSY. 1.
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ROM/RAM chip select

4

RAM

ROM

A15

U1A 74LS32

2

3 9 U1C 74LS32

A

MEMR

4

ROMSEL

5

10 U1B 74LS32

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15

RAM/ROM

8

6

I/O chip select U2A 74LS139

A2

3

A3

2

O0

A1 A0

O1 O2

A4

1

E

O3

4

9266CS

5

8255CS

6

12 11 10 9 8 7 6 5 27 26 23 25 4 28 3 31

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15

D0 D1 D2 D3 D4 D5 D6 D7

13 14 15 17 18 19 20 21

IO1 IO2 IO3 IO4 IO5 IO6 IO7 IO8

CE1 CE2

OE WE

22 30

RAM/ROM

24 29

MEMR MEMW

VCC

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12

GND

RAM/ROM MEMR

8251CS

10 9 8 7 6 5 4 3 25 24 21 23 2 26 27 1 20 22

A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 NC WE READY/BUSY

7

PPI

U9 8251A 11 12 13 15 16 17 18 19

IO0 IO1 IO2 IO3 IO4 IO5 IO6 IO7

8

FDC

U6 AT28C64

1

6

USART

U4 UM61512AK

A14

5

VCC

U11 FDC9266 U12

D0 D1 D2 D3 D4 D5 D6 D7

D0 D1 D2 D3 D4 D5 D6 D7

27 28 1 2 5 6 7 8

IOR IOW A0 8251CS

13 10 12 11

D0 D1 D2 D3 D4 D5 D6 D7

CLK DSR CTS DTR RTS TxC RxC

RD WR C/D CS

RxD TxD TxEMPTY SYNDET/BD

14 15

RxRDY TxRDY

RESET

20

USARTCLK

22 17 24 23 9 25

DSR

3 19 18

RXD TXD

RESET

1

9266CS IOR IOW

4 2 3

A0

5

D0 D1 D2 D3 D4 D5 D6 D7

6 7 8 9 10 11 12 13

FDCINT

18 14 15

TC

16

FDCCLK

22

DTR GND

xCLK

16 21

VCC

CE OE

7

RESET

DSKD WDOUT P0 P1 P2

CS RD WR A0

RDY WP/TS IDX FLT/TR0 MINI

DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7

US0 US1 MFM RW/SEEK WE HDL HD LCT/DIR FR/STP

INT DRQ DACK TC CLK

TEST

23 30 24 31 32

DSKD WDATA P0 P1 P2

35 34 17 33 21

WP/TS INDEX FLT/TR0 MINI

29 28 26 39 25 36 27 38 37

35

RESET

VCC

8255CS 6 CS IOR 5 RD IOW 36 WR

US0 US1 RW/SEEK WGATE SIDE LCT/DIR FR/STEP

VCC

A0 9 A1 8

A0 A1

D0 D1 D2 D3 D4 D5 D6 D7

D0 D1 D2 D3 D4 D5 D6 D7

34 33 32 31 30 29 28 27

GPIO connector

Floppy disk connector

Oscillators

Baud generator

VCC

PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7

19

X2 2,4576 MHz

OUT

8

USARTCLK

2 4 6 8 10 12 14

19200 9600 4800 2400 1200 600 300 xCLK

GND

GND

GND

1µF

3

C2-

VST1OUT

TXD 10

T2IN

DSR 12

R1OUT

R1IN

RXD 9

R2OUT

R2IN

14 15 16 17 13 12 11 10

INUSE MOTOR TC RESET B

ROMSEL STROBE

T2OUT

4 C14 1µF

5 2

GND

GND VCC

J5 Serial connector 6 14

DTR

7

TX

13

DSR

8

RX

DTR GND

TX RX DSR

5 9 4 8 3 7 2 6 1

C

RS232

15

LOGIC

GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7

GND

C1-

T1IN

18 19 20 21 22 23 24 25

A

7 C2+

VS+

DTR 11

FDCINT BUSY INDEX

0

14

GND

1 3 5 7 9 11 13

C1+

4 3 2 1 40 39 38 37

1µF

GND VCC

Reset

1 C13 J4

C16

11

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 4040

U10 MAX232

C15

CLK

9 7 6 5 3 2 4 13 12 14 15 1

16

U7

10

1µF

USARTCLK

VCC

FDCCLK

GND

Vcc OUT

8

7

GND

X1 8 MHz

CONN_02X07

14

VCC

Vcc

GND

VCC

J3 Floppy disk connector 1 4 3 6 5 INDEX 8 7 MOTOR 10 9 DSB 12 11 DSA 14 13 MOTOR 16 15 DIR 18 17 STEP 20 19 WDATA 22 21 WGATE 24 23 TRK0 26 25 WRTPRO 28 27 RDATA 30 29 SIDE 32 31 DC 34 33

DENSEL 2

GND

J2 GPIO connector 1 2 STROBE 3 4 BUSY 5 6 7 8 VCC 9 10 11 12 13 14 15 16

GPIO0 GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7

7

C

Serial interface

VCC

J1 SC3000 connector 1 2 A0 3 4 A1 5 6 A2 7 8 A3 MEMR 9 10 A4 MEMW 11 12 A5 IOR 13 14 A6 IOW 15 16 A7 17 18 A8 19 20 A9 21 22 A10 23 24 A11 25 26 A12 27 28 A13 29 30 D0 31 32 D1 33 34 D2 A14 35 36 D3 A15 37 38 D4 39 40 D5 41 42 D6 43 44 D7

PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PB0 PB1 PB2 PB3 PB4 PB5 PB6 PB7

B

SC3000 connector

82C55A

R1 4.7k

3

26

2

VCC

1

GND

GND GND

Floppy disk signals VCC U3A

U2B 74LS139

D

US0

13

US1

14

WDATA O0

A1

DSA

11

DSB

2

WDATA

INDEX

U5A

1

O1

WGATE

3

4

WGATE

RDATA

U5B

3

U3C

E

O3

SIDE

9

5

6

INDEX

SIDE

U5C

5

4

6

DSKD

GND

74LS14

74LS06 GND

RW/SEEK

U5D

9

8

TRK0

2 4 6 8 11 13 15 17

RW/SEEK RW/SEEK

1 19

WRTPRO FR/STEP LCT/DIR LCT/DIR FR/STEP

74LS14

74LS06

10

2

74LS14

74LS06 U3B

A0

O2 15

12

1

I0a I1a I2a I3a I0b I1b I2b I3b

Read Write

Seek U8

OEa OEb

O0a O1a O2a O3a O0b O1b O2b O3b

18 16 14 12 9 7 5 3

FLT/TR0 WP/TS D

DIR STEP WP/TS FLT/TR0

74LS240

RW/SEEK

74LS14

E

E

Power

Decoupling capacitors

PWR_FLAG PWR_FLAG

GND

VCC

Interface pour Sega SC-3000 8 Ko ROM, 64 Ko RAM RS-232 (300 à 19200 bauds), GPIO et lecteur de disquette (c) 2017 Patrick Lafarguette

VCC C1

C2

C3

C4

C5

C6

C7

C8

C9

C10

C11

C12

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

1µF

Sheet: / File: SF7017.sch

Title: Interface SF-7017 Size: A3 Date: 2017-05-12 KiCad E.D.A. kicad 4.0.6

GND

F

1

2

3

4

5

6

7

Rev: 0.9 Id: 1/1 8

F