JPM MPS2, Руководство пользователя

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3
SYSTEM CAPABILITIES
Sound Generation
Complex Sound Generation utilising the TI SN 76489. The power output is 2W into 8 Ohms. There is on board
volume control, capable of being by-passed by the alarm signal.
Serial Communication
This is achieved via the RS 232 interface.
Data Storage
This is achieved by 2K bytes (expanding to 8K x 8) Cmos RAM. Battery back up is provided by an on board re-
chargeable NI-CAD battery with a 5 year life.
On Board Switches
The following are provided:
1 off - Hexidecimal rotary switch (0 to F).
1 off - 8 way SPST DIL switch.
MK 3 Memory Board
The memory board consists of three 28 pin sockets and an IC for address decoding. The IC (74LS139N)
provides additional address to that already present on the MPS1 and MPS2 main boards. The three 28 pin
sockets can take either 8K x 8 (2764), 16K x 8 (27125) or 32K x 8 (27256) EPROM's, giving the memory board
a capacity of between 24K (3 x 2764's), 48K (3 x 27128's) or 48K (1 x 27256 and 1 x 27128).
The decoding for these types of EPROM's is selectable by links 1 to 5 on the Memory card:
For 3 x 2764, links 4 and 5 inserted.
For 2 x 2764 and 1 x 27128, links 4 and 5 inserted.
For 3 x 27128, link 3 inserted.
For 1 x 27256, links 1 and 2 inserted.
Power Supply
The supplies for MPS2 are of the linear variety and include.
a) +5v at 1.5 A.
b) +12v DC at 1.8A.
c) -12v DC at 0.2A.
Unregulated supplies are:
1) 50v DC at 5A Lamps Supply (VMUX).
2) 24v DC at 1 A Reel Supply.
3) 50v AC at 2.5A AC payout solenoids.
4) 110v AC at 1.3A Hopper Supply.
5) 48v AC peak at 100mA - Low Mains Supply Sensor .
6) 128v AC at 1 A -Video Monitor Supply.
For further information on specification of power supply see pages 5 & 6.