Macintosh Video Circuit

(1)

8 7 1

CR15!

1N5234!

6.2V

R4!

100 S

C7!

.01

4!

J1!

3

R14

GRN RED BLU +12V

+12V!

!

FROM POWER!

SUPPLY

C2 4700/16V L1

R11 1.5 R10!

10K

R20 220 R35!

1K

C1!

3.9/25V C13!

33/16V

R8!

100 R12!

100 C12!

.001

5 4 6 2 1

3 R24!

10K

R22!

330K Q5 2N5485

1/4 U1 13

12

14 C5!

47/10V

HEIGHT!

R55!

500K

8 9

10

1/4 U1!

LM324 3 1

2

1/4 U1!

LM324 R31!

10K

R21!

1K

R30!

10K

R29!

1M

R28 10K

C11!

33/16V

CR6

Q4!

2N4401 CR7

CR3 CR2

R6!

2.2K C6!

22/50V

Q2!

MPSU51

C14!

22/50V

CUTOFF!

R53 2M R5!

470K

FOCUS!

R54 2M R9!

1M R19!

470K

R17 R18!

1M 100K C9!

10/160V R13!

100K U2

R25!

470

Q6!

2N4401

+12V

Q3!

BU406

Q7!

2N3904

CR28

-12V -12V

CR4 +5V

HORIZ!

TO!

YOKE

+12V

L2 L3

CR1 CR5

+12V

CR10 CR4

NE1 L5

BRN 4

1 2 YEL

BLK NE2

CR12

CR14 CR13 +5

8 VIDEO

9

10 +5

13 11 12

6 7 3

HOR!

DRIVE

+ -

-

Macintosh Video Circuit

+ - VERT!

DRIVE

+

+5V

VERT!

TO!

YOKE CR11

T1 T2

BRIGHTNESS!

R57 1M

R16!

100K R15!

100K

Q1!

MPSU01 R7!

39 5W

C3!

220/16V R1!

220

+30V

+12V TO SWEEP CKTS J4!

PIN1

PIN3

PIN5 PIN4

PIN7

PIN9

J3 SPKR!

63Ω

WIDTH C4!

.033

C8 .01

C17!

.01

C12!

.01

C15!

.01

C10 .22

G D

R3!

1.5

R2!

1.5

1!

J1!

2

C20!

.01 C19!

.01

L4!

27

2

3

4

5

(2)

CLK!

15M

CLK CLK

KBRD CLK 7

VA1!

VA2!

VA3!

VA4 VA10!

VA11!

VA12!

VA13!

VA14 VA7!

VA8!

VA9!

VA14

VA7!

! A7!

A15!

VA8!

! A8!

A16 VA5!

! A5!

A13!

VA6!

! A6!

A14

VA3!

VA11!

A3!

A11!

VA4!

VA12!

A4!

A12 VA1!

VA9!

A1!

A9!

VA2!

VA10!

A2!

A10

VA7

VA8

VA9 VA6

VA12 VA11 VA10

11 VA5!

10 VA6!

9 VA7!

8 VA8 3 VA1!

4 VA2!

5 VA3!

6 VA4

VA13!

VA14 3 VA9!

4 VA10!

5 VA11!

6 VA12

+

2 14 1 15

6 16 6 16

SH/LOAD SI

9 SH/LOAD SI

OE

14 IPL2

IPL1 R30 3.3K R20 3.3K R2 3.3K

HALT

1

7.8336MHZ

2 3 4 5 6 7 D0-D15 D0-D15

A1-A23 A1-A23

CONTROL CONTROL

AS 11 OVERLAY 6 A21 9 A22 8 A23 7

BMU1 17 RAM.E

16 ROM.E 15 VPA 14 SCC:CS 13 SCC:RD 12 IWM:CS

R/W

RAM.E 2

3

9 BMU0 TSG

12 RAM.RD

13 RAM.WR 14 AX13

16 VIDEO-OUT 19 DTACK

17 AX14

R6 47 2

AS 7

UDS 8

LDS 9

S1 4

19 DTACK

18 S0 12 CAS.LO 13 CAS.HI 14 RAS

17

15 4

5 TSM

18 R31 47 CLK

3

18 VIDEO-IN

IRQ INT 8

E 6

A19 3 19 IPL0

17 CB1 14 RTxC

12 D0 R5 47

9 8 7 4 3 2 19

18

3 2 1 5

4 20 15

2

1 20

10 11

10 10 11

R35 47 ROM.E

RAM.E 6 5

16

5 6 20

20 20

15 S1 19 RESYNB 18 RESLN 17 CPU-VID 16 PB6 14 HSYNC 13 VSYNC

12 SH/LOAD

11 10 9 8 1

2

13 12 CLR

CLK CLK CLR

1 2

CLK CLR 13 12 CLR

CLK

LS393 LS393

U1F

U1G

VIDEO

OSC 1 2 15.6672 MHZ

R8 3.3K

10 11 R36 47 R36 75

LS244 D0'

D1' D2' D3' D4' D5' D6' D7'

D0 D1 D2 D3 D4 D5 D6 D7

LS244 D8'

D9' D10' D11' D12' D13' D14' D15'

D8 D9 D10 D11 D12 D13 D14 D15 D0'

D1' D2' D3' D4' D5' D6' D7'

D8' D9' D10' D11' D12' D13' D14' D15'

LS166 U14F

U13F LS166

13

1 1 2

3 4 5 10 11 12 14

9

8

13 VIDEO 7 15M

7 15M LS161

LS161 D8'

D9' D10' D11'

D12' D13' D14' D15'

1 3 4 5 6

1 3 4 5 6 2

2

10

10 TC 15

7 8

7

14 11

TC 15

SOUND 7

9 PE

9 PE 12

ASG D0'

D1' D2' D3' D4' D5'

9 8

2 4 6 8 17

11 15 13

18 16 14 12 3

7 9 5

2 4 6 8 17

11 15 13

18 16 14 12 3

7 9 5 1

1

9

1

R35 47 10 11

10 9

CPU 68000

2 4

3

7

VPA

.9792MHZ

LAG

13

SPEED

6 AS

7 8 9 10

UDS LDS R/W DTACK 15 CLK 19 VMA

20 E 21 VPA 25 IPL0

RESET 17

18

BERR 22

14 49

SW1 23

BR 13 24

29 A1

30 A2

31 A3

32 A4

33 A5

34 A6

35 A7

36 A8

37 A9

38 A10 39 A11 40 A12 41 A13

45

A16

46

A17

47

A18

A20 48

A19

50 A21 51

52 A23 A22 A14 A15 42

43 44

5 4 3 2 1 64 63 62 61 60

58 59

57 56 55

D0 D1 D2 D3 D4 D5 D6

D8 D7

D9 D10 D11 D12 D13 D14 54 D15

D0 D1 D2 D3 D4 D5 D6 D7 A1

A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13

A16 A14 A15

3 4 5 7 8 9 10

6 11

12 13 15 16 17 18 19

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

A16 A14 A15

3 4 5 7 8 9 10

6 11

12 13 15 16 17 18 19

D8 D9 D10 D11 D12 D13 D14 D15 2

1 25 24 21 23

26 27

22

22 28

ROM.LO

28

ROM.HI

AX14 AX13

A20 20 CE A20 20 CE 14

12 X 2.2K RP

U4D LS04

16L8 16R4 16R4

OE OE OE

16R6 16R8

OE

8

CLK

CLR

SO

CLK

CLR

SO 16R8

3 4 5 6 13 12 11 10

7

9 U13F

AS253

C51 16

A17 A18

R40 2.2K

W1 128K ONLY

6

5 24

5 7 6 1 1 4

2 8

311

C2 C3 9

8 7 6 5

10 3

5 4 3 2

+

- -

+

2N4401

R29 150 LF353

R15 200K

C12

R13 470K R14 47K

R18 47K R19 6.8K 1

-12V

+12V

11

4016 4

-12V CR3

R12 470K R17 150K R16 68K

2 3 PA7

PB5 PB3 PB4 PA5 D8

D9 D10 D11 D12 D13 D14 D15 A9 A10 A11 A12 E

A20

VMA R/W KBRD2

KBRD.DATA 33

32 31 30 29 28 27 26 38 37 36 35 25 23 22 18 19

IRQ

21

SNDRES

PB7 17

SND.PG2

5 PA3 VSYNC 40

CA2 VIA

16 PB6 7 HD.SEL

14 4:MOUSE 13 7:MOUSE 15 8:MOUSE FB1 9 W/REQA,B

PA4 6 IRQ

OVERLAY

PA0 PA1 PA2

2 3 4

KBRD J8 R38 27

R37 27 FB5 27

FB4 680 R22 47K

C49 .1

C50 .1 PA6 8

VID.PG2

RTC CA1

PB0 PB1 PB2

39 10 11 12

C19 .1

1 C13

C18 R21

1K

2

4 8 11 .1

5

6 7

+12V

8

4 1 1

5

7 8 9

D8 D9 D10 D11 D12 D13 D14 D15 A1 A2 R/W SCC.RD SCC.WR SCC.INT

40 1 39 2 38 3 37 4 34 32

36 35

33 5 SCC.CLK 20

12 28

PCLK RTxCA RTxCB

DCDA DCDB W/REQB W/REQA 10

30 19 21 31

SYNCB RTSB DTRB TxDB SYNCA RTSA DTRA TxDA

29 23 24 25 11 17 16 15

3 2

6

7

15 14

10 11 8 -5V 1

U6C 26LS30

- + - + - + - 5

3

11

13 18

14

22 26 27 13 TRxCA

RxDA CTSA

TRxCB

RxDB CTSB

R10

12 6 7 2 1 10 9 14 15

2 3 5 4 6 7 8 9

FILTER3

1

5 1

J2

J3 Rx+

Rx- Tx+

Tx-

Rx+

Rx- Tx+

Tx-

FILTER2

FILTER1 2

3

19 18

D0 D1 D2 D3 D4 D5 D6 D7 A9 A10 A11 A12

3 4 5 6 10 11 12 13 14 15 16 17

AS 25

CLK 24

RESET 23

IWM.CS 34

1 28 2 27 9

20 21 22

8 13 12

19

2 3 4 5 6 7 8 4 5 6 7 8 9

INT EXT

-12V

1

9

C6 .1 R26 27 FB1 27

C7 .1 R27 27 FB2 27

R25 3.3K

R24 3.3K SCC

IWM

3 9 10 1

C11

C10

LF353

Q3

2N4403Q2 R1 27

R7 47

C1 .1 13

12 6 5 +5V

BAT 4 SPKR

L2

L1 L3

C4 7905

-5V C20 30MFD 16V C5

33MFD 16V

PULLUP RESET

7 3 R23 100K

R3 1K

SW2

CR2 C22

4.7MFD 35V R19

1K

4 8

2

C15 3 Y1

1

AX13

UG9 UG8

UG7

UG5 UG6 UG10

UF12 UF6

UF5

D15D0

14

1Y

2Y 1Y

2Y

1Y

2Y 2Y

1Y

15

S 1Y

2Y

4Y

3Y 3Y 4Y 2Y S 1Y

S0

2 14 1 15 16 3

4 5 6 13 12 11 10

7

9

3 4 5 6 13 12 11 10

7

9

3 4 5 6 13 12 11 10

7

9

VID.PG2

2 3 5 6 14 13 11 10

SND.PG2

LS257

4 10

7 1

6

4

7 12

9

MA0

MA1

MA2

MA3

MA4

9

2

5

3

8

4

7

12

9

MA5

MA6

MA7

3

10

8 6

1

4

9

5

7

2 R33 47

R33 47

U2F RP2

5 x 47 OHM

RP3 5 x 47 OHM

LS257 U2F U4G

AS253 U3F AS253 U4F

AS253

U3G AS253

7

9 3 4

2 14 1 15 16 2 14 1 15 16

2 14 1 15 16

3 4 5 10 7 13

6 9 12 15 11

DO

DI

S1 S1 CPU-VID/SND-SPEED S0 CAS.HI CAS.LO RAS RAM.WR

PULLUP

1 G

15

1A 1B 2A 2B

4B 4A

3A 3B

1A 1B G

1

B A 1G 2G B A 1G 2G

B A 1G 2G

B A 1G 2G 1C3

1C2 1C1 1C0 2C3 2C2 2C1 2C0

1C3 1C2 1C1 1C0 2C3 2C2 2C1 2C0

WR RAS MA0 MA5 MA1 MA6 MA2 MA7 MA3 CAS MA4

2 16

D1 D2 D3 D4 D5 D6 D7

D8 D9 D10 D11 D12 D13 D14

UF7 UF8 UF9 UF10 UF11

UG11 UG12

2A 2B 4A 4B 3A 3B

MA8 R41 2.2K

R42 47

VIDEO ADDRESS BUSS

KBRD CLK CLK

512 K ONLY

Clk/CTS

+5V +12V

+5V

+12V

Earphone Mouse

Floppy

342-0250 342-0255 342-0254 342-0252 342-0251

342-0220 23256 23256 342-0221

(3)

F00000

E00000

D00000

C00000

B00000

A00000

900000

800000

700000

600000

500000

400000

000000

EVEN BYTE ODD BYTE

RAM 128K

RAM IMAGE ROM 64K 400000-40FFFF

ROM IMAGE

OR 512K

000000-01FFFF 000000-07FFFF UNUSED

UNUSED

ROM IMAGE ROM IMAGE ROM IMAGE ROM IMAGE VIA EFE1FE-EFFFFE

VIA IMAGE

SCC READ 9FFFF8-9FFFFE

SCC IMAGE SCC WRITE BFFFF8-BFFFFE

SCC IMAGE IWM DFE1FF-DFFFFF IWM IMAGE

PHASE READ

MEMORY MAP

(4)

C32!

.47

CR17 + C41!

.01

PIN!

10 J4!

PIN8 R41!

100K

CR18!

1N5927!

12V

R35!

1K CR19!

1N5234!

6.2V

1

2 R48!

100 R44!

100 C37!

4700

R45!

1K CR28

Q10!

CR400

R46!

22 R50!

1.5 C42!

.1

C43!

470/10V R52!

10K

C40!

.033 CR27

CR23

R36!

470 C28!

.001 C21!

.1

C27!

.022 R37!

10K R38!

1.2K VOLTAGE R56!

R34! 500 1K

LM324 7 6

5 - +

C39!

470/10V

CR30 R42!

1K

R47!

R49!

1.5 CIRCUIT!

GROUND

CR21 C31!

1000/16V C25!

1000/16V +12V

-12V L7

1000/16V

+C26 +C30

220/16V 8

7 6 10

9 C34!

330 R40!

220 CR25 CR26

CR24 1 2 R39

117VAC!

INPUT

N G L

CHASSIS

C38!

.1

3 4

C33!

4700 F1! S1

2.5A

+ +

C35 C36 100/200V (2)

1 2

3 4 5

CR22

L8

+5V CR20 CR29

R51!

15 Q9!

2N3906

Macintosh Power Supply

Q8!

2N6394 R32!

12 R33!

15 U3 4N35 J5

LF2

LF1

5 4

PIN!

6 PIN 7,9

L6 Q11!

2SC2335

V BAT!

PIN11

B1 CR19

C24 2200/10V C29

(5)

ASG 8

ASG 12

ASG 9

S1 VIDEO/CPU

PAL.TSM

15 MHZ

0 1 2 3 4 5 6 7

RAS CPU.CLK

SO CAS.LO CAS.HI

OPTIONAL

17:

S1

.9792 MHZ HSYNC

0 2 4 6 8 10 12 14

SH/LOAD

S1

HSYNC

VIDEO:

SND.SPEED .9792 MHZ

16 18 20 22 24 26 28 30 32 34 36 38 40 42 44

RESYNB

OPTIONAL

RAM ACCESS

^VIDEO ^CPU ^VIDEO

16 VSYNC

CPU.VID RESYNB

SHIFT/LOAD

HSYNC

(6)

AXXX TRAP DISPATCH TABLE

000000

EVEN BYTE ODD BYTE

RAM MAP

68000 EXCEPTION VECTORS 000400

000800 000B00

SYSTEM HEAP ZONE (004D00)

APPLICATION HEAP ZONE STACK

512K 128K

VIDEO SREEN1

01A700 07A700

VIDEO SREEN2

012700 072700

01FD00

SOUND & SPEED BUFFER 1

5580H BYTES

5580H BYTES SOUND & SPEED BUFFER 2 01A100

07A100 07FD00

(7)