5-10
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Rev. 8-21-01
The following is a summary of the main control boards’ memory capability on the 5000/5020
series control. A listing of the memory cards and their part numbers is shown below. Also
shown are which memory cards are compatible with the different main boards associated with
the 5000/5020 series control. On Okuma controls, the bubble memory capacity is usually
referred to in bits and ram memory capacity is referred to in bytes.
1Mbit X 1 = 256Kbit X 4 = 128Kbyte
Main Board Bubble Memory Ram Cards
A911-1520
MB-IIB
The maximum bubble
memory capacity on the
MB-IIB is 32 Mbits.
A911-1224 4 Mbit X 1
A911-1225 4 Mbit X 2
A911-1226 4 Mbit X 3
A911-1227 4 Mbit X 4
A911-1522 MC 11 .5 Mbyte
A911-1523 MC 12 2 Mbyte
The MB-IIB has no standard
ram memory on it. The rams
maximum capacity is 6 Mbytes.
A911-1509
MB-IIA
The maximum bubble
memory capacity for the
MB-IIA is 32 Mbits.
The 1220 card is sometimes
referred to as 256 Kbit X 4.
A911-1220 128 Kbyte
A911-1221 1 Mbit X 1
A911-1222 1 Mbit X 2
A911-1223 1 Mbit X 4
A911-1224 4 Mbit X 1
A911-1225 4 Mbit X 2
A911-1226 4 Mbit X 3
A911-1227 4 Mbit X 4
A911-1501 MC1-II .5 Mbyte
A911-1505 MC5-II 1.5 Mbyte
A911-1510 MC9 1 Mbyte
The maximum ram capacity for
the MB-IIA is 2 Mbytes. This
board has .5 Mbytes of standard
ram memory.
A911-1500
MB-II
The maximum bubble
memory capacity for the
MB-II is 16 Mbits.
A911-1220 128 Kbyte
A911-1221 1 Mbit X 1
A911-1222 1 Mbit X 2
A911-1223 1 Mbit X 4
A911-1501 MC1-II .5 Mbyte
A911-1505 MC5-II 1.5 Mbyte
A911-1510 MC9 1 Mbyte
The MB II has .5 Mbytes of
standard ram and a maximum
capacity of 2Mbytes.
A911-1100
MB
The maximum bubble
memory capacity on the MB
board is 16 Mbits. The MB
board is sometimes referred
to as the MB0 board.
A911-1220 128 Kbyte
A911-1221 1 Mbit X 1
A911-1222 1 Mbit X 2
A911-1223 1 Mbit X 4
A911-1105 MC 5 384 Kbytes
A911-1101 MC 1 128 Kbytes
The MB has 128 Kbytes of
standard ram and a maximum
capacity of .5 Mbytes
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