IBM 5280 Technical Newsletter page 12

561
RO$ PATCH CARD
LOCATIONS AND CABLES
The following figure shows where the different ROS
patch cards plug in on the logic board.
Signal Cable Connections
DC4 DC3
Ground
1 3 1
10
+5 Vdc \ / Ground 1
•
•
•••••••••
'.
..
.
8
7 6 5
DC2
10
••••••••
4
I
Keyboard/Display MPU
3
1
Page of SY31-Q600-1
As updated January 30, 1981
By TN L SN20-9543
DCl
10
•
••••••••
2 1
JA
I
Keyboard/Display Storage
II
Main Storage
IL
ETC/MSR & ETC/Buffer timer
IB
I
Diskette/Main MPU
JC
~
I
Line Adapter
It
Printer MPU
I
VFO
Il
Diskette Driver/Receiver
I
D
'-r""'"
l
Communications or Feature Main MPU
I
Remote Data Station
I
E
- r
J
IROS Patch
Communications or
J
Feature Main MPU
I
ROS Patch (Base Main MPU)
I I
ROS Patch (Printer)
1
~
-,-
~
l
ROS Patch (Diskette)
J
I
ROS Patch (Kbd/Display)
1
-r -r:
Power Cable Connections
• • •••
6
5
3
________________________________ K_e_y_b_oa_r_d_/D __ is_pl_a_y_M_p_U ____________________________
~IA
I Keyboard/Display Storage I Lo. I ____ M_a_i_n_S_to_r_a_Qe _ _ ...... 11 .... _ _ _ _ E_T_C_/_M_S_R __ &_E_T_C_/_B_u_f_fe_r_t_im_e_r _____ ..... I B
_________________________________ D_i_sk_e_tt_e_/_M_a_in_M __ P_U ________________________________ ......
Ic
'--_ _ L_i_n_e_Ad_a_pt_e_r_--a
1 .. 1 ___
p_r_in_t_er_M_p_U _____
11 .. ______
V_FO _______ .....
II
Diskette Driver/Receiver
I
D
~
_____ CO __ m __
m_u_n_i~
__ t_io_n_s_o_r_F_e_at_u_r_e_M_a_in __ M_P_U ____
- J
l
Lo.
1 ____________
R_e_m_o_t_e_D_a_t_a_S_ta_t_io_n __________ ....... IE
531
Logic and Cards 101