IBM RS/6000 MODEL 591
7013-591 IBM RS/6000 Model 591
7013-591 CPU Card FRU 93H4880,
P/N 93H4881 Thanks to Rick Ekblaw for scans...
|U1 77MHz POWER2 CPU, 26H4418
U2 50G6946 "CLOCK"
U3 51G9835 "MEM PAL"
U4 39H9062 D87C51FC1, "OCS"
U5 99F1719 "XIO"
U6 93H4882 "IPLROS" TMS27C040-12,
TCW0 70G6817 256Kx36 cache
J4-11 Memory card
|J12 2x8 pin connector
J13,14,16 Power Connector
J36 4x82 connector to XIO
Y1 154.000 MHz osc for CPU
Y2 40.1500 MHz osc for I/O
Y3 3.906250 MHz osc for Time-Of-Day
The "EM1" area with Y1-Y3 and U2 usually has a metal plate
mounted on the visible spring clips. The heat sink that is normally
mounted on the processor plate stands just over 2 inches high.
The 591 uses the S5 memory
card, system can handle 2GB of memory.
The Model 591 is a quad-word system if two memory cards are installed
and an eight-word system if four memory cards are installed. Total memory
cards in the machine can only be two, four, or eight. Memory must
be installed in combinations of two, four, or eight cards.
The first two (if only two cards installed) or first four (if
four cards installed) memory cards installed must be installed in pairs
and of equal capacity (for example all 32MB). The second set
of four memory cards installed can be of any available supported capacity
but also must be of equal capacity to each other and installed simultaneously.
7013-591 XIO Planar FRU 73H2604,
U6 Toshiba 81F9018
U19 PAL, 73H2606
U26 Toshiba 81F8125
U29 Intel N80C186XL20
U34 LSI 81F9021
U1F (on back) 40H2913
J28-35 32-bit slots (J29 VBE)
J36 4x82 connector to CPU planar
J37 HD 2x30 pin connector for keyboard/mouse/tablet/serial 1/serial
??? Diskette drive connector (can't find a label)
J38 50-pin SCSI connector
J39 HD 2x30 pin connector for keylock/3-digit display/reset button/battery
J40,41 Power connector
Y1 14.3181 MHz oscillator
Y2 24.0 MHz oscillator
Y3, Y4, Y9 ??? crystals labelled 100 PD9F
Y5 32.768 Khz crystal
Y6 9.216 MHz oscillator
Y7 39.95 Mhz oscillator
Y8 31.95 Mhz oscillator
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