Star Tech Journal
Issue: 1983-October - Vol 5 Issue 8 - Page 20
20
STAR*TECH JOURNAL/OCTOBER 1983
New System Preview continued.
connector and pin 10 is the tenth pin down from the top right-hand
side.
SCHEMATIC CORRECTIONS
I didn't verify the monitor schematics or the cat box readings, but here
are the logic schematic corrections for the first printing:
K- WorkingRAMandmotionobjectRAM-4C,4D,6A,6B,6D,6E,
6F, 6H, 7H, Rl4S
L- Dynamic RAM-Buffers, latches, andmultiplexers-3F, 3H, 4E,
4F, 4H, 4J, 5F, 5H, SJ, SL, BF, C9, CIO, Cll, Cl2, Rl9, R20
M- Dynamic RAM address selectors - 3K, 4L, 4M, 4N, 4P, CS
SHEET 18
MAIN WIRING DIAGRAM
a) Change P29 explanation to "For utility panel wiring diagram see
Sheet 2B."
b) For clarity, label pin Y, P20 of main PCB "Trackball Return".
c) Remember that all returns and negative sense of main PCB are
common ground
SHEET 2A
REGULATOR/AUDIO SECTION
Everything between J9 and JI0 - everything - isn't really there.
SHEET 28
UTILITY PANEL
If one coin counter is used, it is usually connected to the right counter
plug and Switch 1 at SR on the logic board is on, shorting the outputs of
both coin counter drivers together.
SHEET 4A
MICROPROCESSOR
The silkscreen (printing) near the spade lug next to the mpu on the logic
board reads 01, yet on the schematicpin37 of the mpu reads 10. Change
the schematic to read 0 1.
Power on Reset
The +12v unreg. at the cathode (bar side) ofCRl sould be changed to
10.Jv unreg.
N- Non-volatile RAM- 4A, 4B, 5E, SM, llF, Rl7, RIB, Rl51,
Rl52
P- Positioncontrol-6N, 7F,9E,9F,9H, 9J,JOH, JOJ, Rl47,Rl49
R- Motion-object horizontal control - I0C, IOD, IOE, IOF, Rl47,
Rl49
S- Motion-object buffer- 7D, 9H, I0A, I0B, JQJ, llA, llB, R37-
R44, Rl47
T - Motion-object vertical control - 7B, 7C, 7D, 7E, SE, BF, Rl48
U - Motion-object picture ROM- 7 A, 8B, 8D, 9A, 9B, 9C, 9D, R25-
R36, Rl50
V - Audio - 3B, JD, SB, and assorted resistors and capacitors in that
area
W-Trackball input- llE, JJF, Cl4-C21, R84-R91
X- Player switches- I IC, l JF, C22, C23, C2S-C29, R92, R93, R95-
R99, RlOO, Rl0l, Rl03, Rl07
Y- Coin counter- JS, SK, 6N, 8N, QIO-Ql2, Rl24-Rl29, Rl43
Z- Color memory andoutput-9H, JOH, IOK, IOL, I0M, ION, I0R,
llN, llP, JJR, L2-L4, Q3-Q9, R46-R83
Watchdog
At the factory a 220pF capacitor was added between pin 14 and pin 9
(GND) of 8M. Draw it in.
AA- Horizontal scrolling- SM, SN, SP
SHEET 68
WORKING RAM
The "we" just below "oe" on 6D should be crossed out.
SHEET 88
BB-
Dynamic RAM control- 7J, 8H, 9K, 9L, 9M, Rl41, Rl46
CC-
DynamicRAMwriteprotection-6K, llK, llL, 11M,Rl42,
R21-R24
COIN COUNTER
Add the words "trackball lightbulb" to "start LEDi."
DD- Bit mode decoder- IP, IR, 2K, 2R, JR, RIS, Rl6
Audio Output
On the upright model the "Start I" and "Start 2" are not used. Board
sets itself to cocktail type when cocktail is pulled low.
EE -
Bit mode read write - 2H, 2J
FF -
Auto increment - 1 S, 2L, 2M, 2N, 2P, JL, 3M, 3N, JP
SHEET 9A
EMI SHIELD
On P20 label Y "Trackball Power," add "not used on upright" to K; at 9
add "trackball lightbulb". At Pl 9 mark out HCLK2 on 2 and VCLK2
on 3; add HCLK2 at 3 and VCLK2 at 4.
LEGEND FOR FIGURE 5·11
The logic board in Figure 5-11, blocked off and labeled with letters,
shows numbers of chips which are grouped together and related in
performing certain functions. Chips on the board not blocked off do
perform functions but are shared by more than one major section. The
shared chips are underlined and for convenience are listed at the end with
all sections which share them.
A- Microprocessor and buffers- IB, 1 C, JD, 2D, 2E, 2K, 6N, 7H, 7J,
JJR, RS, Rl3, C5
B- Watchdog - 8M, BK, RB, RI 44, 220pF
JD -
Microprocessor, power on reset, horizontal sync chain
2K -
Microprocessor, prgm mem, bit mode dee
6N -
Mpu, add dee, hor sync chain, position control
7H-
Mpu, working RAM
7J-
Mpu, dyn RAM cont
1 JR - Mpu, color mem and out
JS-
Pgm mem, auto incr
SL-
Pgm mem, add dee, vert sync chain, dynamic RAM
SM-
Add dee, nov RAM
9L-
Hor, sync chain, dyna RAM cont
C- Program memory and buffers- IF, IJ, IK, IL, IN, JS, 2F,2K,
3E, 5K, SL
llH- Hor sync chain, vert sync chain
D- Address decoders- 2/JR, 4R, SL, SM, SR, 6L, 6M, 6N, 6P, 6R,
Rl39
R13B-Hor sync chain, vert sync chain
E - Power on reset - C4, C7, CRl, R4, R6, R7, Q2
9H-
Pos con, motion obj buffer, color mem and out
7D -
Mot obj buf, mot obj vert cont
JOJ-
Mot obj buf, position control
F- Horizontalsyncchain-6N, 7L, 7M, 7N, 8L,9L, 1 JH, RIO,R13B,
Rl40, Rl41, Rl44
BF-
Vert sync chain, dynamic RAM, mot obj vert cont
H- Vertical sync chain - SL, 7K, 7P, 7R, BF, BJ, 1 JH, RI l, Rl2,
Rl36,RJ3B
JOH- Color mem and output, position control
J- Clock- Cl, C2, CJ, LI, QI, Rl, R2, R3, Yl
J JR -
Color mem and output, mpu and buffer
STAR*TECH JOURNAL/OCTOBER 1983
New System Preview continued.
connector and pin 10 is the tenth pin down from the top right-hand
side.
SCHEMATIC CORRECTIONS
I didn't verify the monitor schematics or the cat box readings, but here
are the logic schematic corrections for the first printing:
K- WorkingRAMandmotionobjectRAM-4C,4D,6A,6B,6D,6E,
6F, 6H, 7H, Rl4S
L- Dynamic RAM-Buffers, latches, andmultiplexers-3F, 3H, 4E,
4F, 4H, 4J, 5F, 5H, SJ, SL, BF, C9, CIO, Cll, Cl2, Rl9, R20
M- Dynamic RAM address selectors - 3K, 4L, 4M, 4N, 4P, CS
SHEET 18
MAIN WIRING DIAGRAM
a) Change P29 explanation to "For utility panel wiring diagram see
Sheet 2B."
b) For clarity, label pin Y, P20 of main PCB "Trackball Return".
c) Remember that all returns and negative sense of main PCB are
common ground
SHEET 2A
REGULATOR/AUDIO SECTION
Everything between J9 and JI0 - everything - isn't really there.
SHEET 28
UTILITY PANEL
If one coin counter is used, it is usually connected to the right counter
plug and Switch 1 at SR on the logic board is on, shorting the outputs of
both coin counter drivers together.
SHEET 4A
MICROPROCESSOR
The silkscreen (printing) near the spade lug next to the mpu on the logic
board reads 01, yet on the schematicpin37 of the mpu reads 10. Change
the schematic to read 0 1.
Power on Reset
The +12v unreg. at the cathode (bar side) ofCRl sould be changed to
10.Jv unreg.
N- Non-volatile RAM- 4A, 4B, 5E, SM, llF, Rl7, RIB, Rl51,
Rl52
P- Positioncontrol-6N, 7F,9E,9F,9H, 9J,JOH, JOJ, Rl47,Rl49
R- Motion-object horizontal control - I0C, IOD, IOE, IOF, Rl47,
Rl49
S- Motion-object buffer- 7D, 9H, I0A, I0B, JQJ, llA, llB, R37-
R44, Rl47
T - Motion-object vertical control - 7B, 7C, 7D, 7E, SE, BF, Rl48
U - Motion-object picture ROM- 7 A, 8B, 8D, 9A, 9B, 9C, 9D, R25-
R36, Rl50
V - Audio - 3B, JD, SB, and assorted resistors and capacitors in that
area
W-Trackball input- llE, JJF, Cl4-C21, R84-R91
X- Player switches- I IC, l JF, C22, C23, C2S-C29, R92, R93, R95-
R99, RlOO, Rl0l, Rl03, Rl07
Y- Coin counter- JS, SK, 6N, 8N, QIO-Ql2, Rl24-Rl29, Rl43
Z- Color memory andoutput-9H, JOH, IOK, IOL, I0M, ION, I0R,
llN, llP, JJR, L2-L4, Q3-Q9, R46-R83
Watchdog
At the factory a 220pF capacitor was added between pin 14 and pin 9
(GND) of 8M. Draw it in.
AA- Horizontal scrolling- SM, SN, SP
SHEET 68
WORKING RAM
The "we" just below "oe" on 6D should be crossed out.
SHEET 88
BB-
Dynamic RAM control- 7J, 8H, 9K, 9L, 9M, Rl41, Rl46
CC-
DynamicRAMwriteprotection-6K, llK, llL, 11M,Rl42,
R21-R24
COIN COUNTER
Add the words "trackball lightbulb" to "start LEDi."
DD- Bit mode decoder- IP, IR, 2K, 2R, JR, RIS, Rl6
Audio Output
On the upright model the "Start I" and "Start 2" are not used. Board
sets itself to cocktail type when cocktail is pulled low.
EE -
Bit mode read write - 2H, 2J
FF -
Auto increment - 1 S, 2L, 2M, 2N, 2P, JL, 3M, 3N, JP
SHEET 9A
EMI SHIELD
On P20 label Y "Trackball Power," add "not used on upright" to K; at 9
add "trackball lightbulb". At Pl 9 mark out HCLK2 on 2 and VCLK2
on 3; add HCLK2 at 3 and VCLK2 at 4.
LEGEND FOR FIGURE 5·11
The logic board in Figure 5-11, blocked off and labeled with letters,
shows numbers of chips which are grouped together and related in
performing certain functions. Chips on the board not blocked off do
perform functions but are shared by more than one major section. The
shared chips are underlined and for convenience are listed at the end with
all sections which share them.
A- Microprocessor and buffers- IB, 1 C, JD, 2D, 2E, 2K, 6N, 7H, 7J,
JJR, RS, Rl3, C5
B- Watchdog - 8M, BK, RB, RI 44, 220pF
JD -
Microprocessor, power on reset, horizontal sync chain
2K -
Microprocessor, prgm mem, bit mode dee
6N -
Mpu, add dee, hor sync chain, position control
7H-
Mpu, working RAM
7J-
Mpu, dyn RAM cont
1 JR - Mpu, color mem and out
JS-
Pgm mem, auto incr
SL-
Pgm mem, add dee, vert sync chain, dynamic RAM
SM-
Add dee, nov RAM
9L-
Hor, sync chain, dyna RAM cont
C- Program memory and buffers- IF, IJ, IK, IL, IN, JS, 2F,2K,
3E, 5K, SL
llH- Hor sync chain, vert sync chain
D- Address decoders- 2/JR, 4R, SL, SM, SR, 6L, 6M, 6N, 6P, 6R,
Rl39
R13B-Hor sync chain, vert sync chain
E - Power on reset - C4, C7, CRl, R4, R6, R7, Q2
9H-
Pos con, motion obj buffer, color mem and out
7D -
Mot obj buf, mot obj vert cont
JOJ-
Mot obj buf, position control
F- Horizontalsyncchain-6N, 7L, 7M, 7N, 8L,9L, 1 JH, RIO,R13B,
Rl40, Rl41, Rl44
BF-
Vert sync chain, dynamic RAM, mot obj vert cont
H- Vertical sync chain - SL, 7K, 7P, 7R, BF, BJ, 1 JH, RI l, Rl2,
Rl36,RJ3B
JOH- Color mem and output, position control
J- Clock- Cl, C2, CJ, LI, QI, Rl, R2, R3, Yl
J JR -
Color mem and output, mpu and buffer
Future scanning projects are planned by the International Arcade Museum Library (IAML).