http://www.computerhistory.it/index.php?option=com_content&view=article&id=50&Itemid=109

some pics (not from me)

My machine is configured for 2 8" disk drive...

/***********************************************/
Motherboard (date 5.12.79):
/***********************************************/

-z80 unknow freq no XTAL


/***********************************************/
ROM board (date 4.7.79):
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-4 sockets for 2708
-1 74139 decoder chip
-U1 DT49-48
-U2 HT20
-U3 FDC8119
-U4 empty


/***********************************************/
RAM2:
RAM0:
RAM1: (date 5.4.79)
/***********************************************/

All ram board installed with 8xF16K4 Dram (2117 compatible 16Kbitx1 rams)
for a total of 48Kbyte of ram!!!


/***********************************************/
Sync board (date 6.7.79):
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-U1 7400
-U2 7486
-U3 7420
-U4 7400
-U5 7493
-U6 7490
-U7 7493
-U8 7493
-U9 7493
-10000 Khz Xtal (10Mhz)

/***********************************************/
FDC board (date 7.11.79):
/***********************************************/

U1 7404
U2 7404
U3 FD1791-B01
U4 74193
U5 74123
U6 7493
U7 74374
U8 74245
U9 74139
XTAL 9Mhz


/***********************************************/
US1 board (no date ):
/***********************************************/

Seem a Serial controller, on the back "ST Margherita" is written... it can stand for "daisy printer" 

U1 empty
U2 empty
U3 Z80ASIO-0
U4 Ne555
U5 MC1489 (used as rs232 rx)
U6 MC1488 (used as rs232 tx)
U7 mm5307aa/n nationa semi (???)
U8 7493
U9 7404
XTAL 14.7456 maybe

/***********************************************/
PRT BOARD (date 12/80)
/***********************************************/
Seem a parallel port controller, on the back "ST Aghi" is written... it can stand for "needles printer" 
U1 74374
U2 74125
U3 74138
J1-J2 connector

/***********************************************/
US2 board 
/***********************************************/

not installed


/***********************************************/
MEM Board (date 3.12.79)
/***********************************************/
U1 2114 Ram
U2 2114 Ram
U3 2708 GCEM1
U4 2708 GCEM2
U5 74165
U6 7432
U7 7474
U8 74245

Ther is a second 7474 above U7with some wire connected here and there.
Video seem to come from this pcb


/***********************************************/
ACI Board not installed
/***********************************************/



/***********************************************/
Keyboard
/***********************************************/

Connected via 16 pins ribbon cable
made by Key Tronic Corp.
General Instrument 30293E-027 20-04592-027 keyboard controller!!!