QB801             0                    1                     2                     3                     4                     5                     6                     7                     8                     9

                                                                     1.Rate Switch to Instruction Step                                                       Micro trace
                                                                     2.ROS Control to ROS Scan                                                               300 BBB BCB BCA BC6 BC7 BB8 BBA BC1 BC0 BDF BDF
A                                                                    3.CPU Check to Process                                                                  B04 BC2 BBD BD9 BDA BC4 BC5 BBE BBE
                                                                     4.Press IPL                                                                             B04 BC3 AEA BC9 BBE
                                                                     5.Visually check ROAR for 0BC7 at E5 on QB801 with B-reg                                B02 BBF BCF
                                                                       check light on
                                                                     6.Press Set IC
                                                                     7.Visually check ROAR for 0BBE at N5 on QB801 with A-reg
B                                                                      check light on
                                                                     8.Follow instructions at word 0BBE
                              00 --- 9399                            9.Visually check ROAR for 0BCD at N5 on QB821 R-reg must
                          K 1011,0      |                              equal FF
                          A 0+0>U       |                            10.Follow instructions at word 0BCD
C                         S         K>W R*---
                          |             |   |
                          |             |   |
                          R 1,1       BBR   |                                                                                     Press
                          C1--    11 --CA   |                                                                                     Set IC
                         CD for U may       |
D                        reset prior lth    |
                        ---------------------
                        |     11 --- 0BBB           00 --- 0BC8           10 --- 0BCA           10 --- 0BC6           11 --- 0BC7           00 --- 0BB8           10 --- 0BBA           01 --- 0BC1           00 --- 0BC0
                        | K 0001,0      |       K 1000,0      |       K 1000,0      |       K 1011,0   DECA       K 1000,0      |       K 1111,1      |       K 0111,0      |       K 0100,0      |       K 1111,0   DECA
                        | A FTXH+KL>R   |       A L+0>L       |       A 0!L>TA      |       A 0^+-0>TE    |       A F-L0>T      |       A 0+K0>Q      |       |             |       A 0+KL>R      |       A 0^+-L0>H    |  
E                       --S UV>MN    MS S*------S STORE       |*------|             |*------|             |*------|             |*------S IJ>MN    MS S*------S STORE       |*------|             |*------|             |*-
                          C K>GB        |       |             |       |             |       C LZ>S5       |       C K>FA        |       |             |       C K>FB        |       |             |       |             | |
                          |             |       C 1>OE        |       C 1>OE        |       C 0>MC        |       |             |       |             |       |             |       |             |       C 1>F0        | |
                          R 0,0       C8R       R 1,0       CAR       R 1,0       C6R       R 1,1       C7R       R 0,0       B8R       R 1,0       BAR       R 0,1       C1R       R 0,0       C0R       R 1,1       DFR |
                          E1--    00 --EA       E2--    10 --EB       E3--    10 --EC       E4--    11 --ED       E5--    00 --EE       E6--    10 --EF       E7--    01 --EG       E8--    00 --EH       E9--    11 --EJ |
                          80+01=81             Set even latch        B-reg Mch Chk         Set supr mal          FF-00=FE              Set stack for         Store prot req        R5=1                  Reset supr mal   |
F                        FT 4 set from         L-reg stores          prior ltch blks       funct trap ltch       L-reg parity          prot request                                                      funct trap ltch  |
                         Load key              bad parity            traps. Set            to stop on mch        causes B-reg                                                                            to allow trap    |
                         R0 and R7=1                                 ALU Chk ltch to            error            mch check                                                                               on B-reg mch     |
                         R5=0                                        blk W-reg reset       CD for TE may         WX advance is                              R7=1 FB=K3                                   error            |
                         Set Sx1 gate                                on trap.              reset prior lth       blocked                                    Set ext trap                                                  |
G                                                                    CD for TA may                                                                          mask                                                          |
                                                                     reset prior lth                                                                        FB=K5 set Op                                                  |
                                                                                                                                                            Out to clear                                                  |
                                                                                                                                                            FI                                                            |
                                                                                                                                                                                                                          |
    QB821.NJE----------------------------------------------------------------------------                                                                                                             ---------------------
H   (01)                                                                                |                                                                                                             |
    Loop                                                                                |                                                                                                             | -------------------
                              00 --- 0BDC           10 --- 0BC2           01 --- 0BBD   |       01 --- 0BD9           10 --- 0BDA           00 --- 0BC4           01 --- 0BC5                         | |     11 --- 0BDF |
                          |             |       K 0100,0      |       K 1011,0      |   ---*K 1011,0      |       K 1011,0      |       K 1110,0      |       |             |                         | --|             | |
                          A L^-D>R      |       A FT+KL>T     |       A D0-KL>Q     |       A 0-0>G       |       A G+D>I       |       |             |       A FI+L0>Z     |                         |   A 0-0>D       | |
J                     ----|             |*--O---S UV>MN    MS S*--O---|          GR S*--O---S WRITE       |*------|             |*------S IJ>MN    MS S*------S STORE       |*-                       ----|             |*-
                      |   C ANSNZ>S2    |   |   |             |   |   |             |   |   C K>GH        |       C TREQ>S1     |       C GR>GF       |       C 1>S7        | |                           |             |  
                      |   |             |   |   |             |   |   C 0>MC        |   |   |             |       C 0>MC        |       C 0>F         |       |             | |                           |             |
                      |   R 1,S7      C2R   |   R 0,Z=0     BDR   |   R 0,INTR    D9R   |   R 1,S7      DAR       R 0,0       C4R       R 0,1       C5R       R 1,0       BER |                           R 1,1       BFR
                      |   J1--    1* --JA   |   J2--    0* --JB   |   J3--    0* --JC   |   J4--    1* --JD       J5--    00 --JE       J6--    01 --JF       J7--    10 --JG |                           J9--    11 --JJ
                      |  Supr A-reg chk     |  1C+04=20           |  CA of D resets     |  Set cnt ready         FF+FF=FE              CD-latch              FI reg cause     |                          00-00=FF
K                     |  latch blocks       |  FT3-Mpx share      |  supr A chk ltch    |                        Wrap I-reg            conditions            A-reg mch chk    |                          To mch chk trap
                      |  stop on 2nd        |  FT4-Load Ind       |                     |                        true with carry       Sel ROM Req           L-reg should     |                          
                      |  error              |  FT5-Sel In         |       00 --- 0BBC   |       00 --- 0BD8      on 64k                Use I to set          not cause B      |                               10 --- 0BCE
                      |  00^00=00           |  Contents of T      ----|             |   |   |             |                            wrap request             check         |                           K 1011,0      |
                      |                     |  indicates value        A SP+0>Z      |   |   R SP+0>Z      |                                                                   |                           A HXL-0>L     |  
L                     --------------------- |  of FT              ----S WRITE       |*- ----S WRITE       |*-   ---------------------------------------------------------------                       ----|             |--
                                          | |                     |   |             | |     |             | |   |                                                                                     |   |             | |
                                          | |                     | --|             | |   --|             | |   |                                                                                     |   C 0>MC        | |
                                          | |                     | | R 0,0       BCR |   | R 0,0       D8R |   |                                                                                     |   R 1,INTR    DER |
                                          | |                     | | L3--    00 --LC |   | L4--    00 --LD |   |                                                                                     |   L9--    1* --LJ |
                        Mch chk trap      | |                     | -------------------   -------------------   |                                           IPL Trap                                  |  L to 07 for      |
M                                         | |                     ----------------------------------------------+----------------------------------------------------------------                     |  high speed loop  |
                                          | |                                                                   |                                                               |                     |                   |
                              00 --- 0B04 | |       11 --- 0BC3           10 --- 0AEA           01 --- 0BC9     |     10 --- 0BBE       Mch chk stop              10 --- 0B02   |       11 --- 0BBF   |       11 --- 0BCF |
                          |             | | |   K 1010,1   DECA       K 0100,0      |       K 0010,0      |     --K 0000,0      |       on 2nd error          K 1011,0      |   |   K 1000,0      |   |   K 1011,0      | |
                          |             | | |   A 0^+-0>D     |       A 0-KL>H      |       A 0+KL>L      |       A D0+0>H      |       A-reg light on        A TX^L>D      |   |   A L+KH>H      |   |   A HXL+0>L     | |
N                         |             |*- ----|         K>W R*------|             |*------|             |*------|             |*-     1.Press Start         |             |*--O---|             |*--O---|             |*O------------QB811------NJE
                          |             |       C 0>S7        |       |             |       |             |       C K>FA        | |     2.Press Start         C ANSNZ>S2    |       |             |       |             |              (10)
                          |             |       |             |       |             |       |             |     --|             | |     to mch chk trap       C 0>MC        |       |             |       C 0>MC        |              Missed Trap
                          R 0,0       DCR       R 1,0       EAR       R 0,CA0B>W  C9R       R 1,0       BER     | R 1,INTR    BER |                           R G0,G1     BFR       R 1,S5      CFR       R 1,INTR      |
                          N1--    00 --NA       N2--    10 --NB       N3--    01 --NC       N4--    10 --ND     | N5--    1* --NE |                           N7--    ** --NG       N8--    1* --NH       N9--    1* --NJ
                                               Set supr mal          H-reg S=0             00+02=02             -------------------                          02^02=00              Block IPL             L for IJ trap
P                                              funct trap ltch       Supr A-reg            Set L-reg for        CA of D resets                                                     with no set           Set L to 08
                        -------------------    to stop on mch        check blocks          IPL trap             supr A-reg chk
                        |     10 --- 0302 |    error. R5=0           Sel trap                   00 --- 0380         latch
                        --|             | |    from B04                                     |             |                                                 Priority     Mch IPL  Frce  Wrap  Prot  Stop  Sel   Mpx
                          A SP+0>Z      | |    Stop on ZT                                   A SP+0>Z      |                                                              Chk      IJ
Q                         |             |*-                                             ----|             |*---                                             H-reg cntrl  X    0   4     2     3     X      5    5+6
                          |             |                                               |   |             |   |                                             Trap order   1    2   3     4     5     6      7    8
                          |             |                                               |   |             |   |                                             Addr of      B    B   B     B     B     B      3    B
                          R 1,0       02R                                               |   R 0,0       80R   |                                             Diag trap    0    0   0     2     4     8      0    1
                          Q1--    10 --QA                                               |   Q4--    00 --QD   |                                                          4    2   1     0     0     0      B    0
                         IPL trap in                                                    |  Stop trap in       |                                             L for trap   00   02  08    07    06    05    0A    01
R                         module 3                                                      |  module 3           |                                             Set L to     02   08  07    *     05    **   0B 01  00
                                                                                        |                     |                                             L for loop   02   07  --    *     05    **   0B 01  00
                                                                                        |                     |
                                                                                        -----------------------                                             Note *            Note **
                                                                                                                                                            06 for Ver 006    0A for Ver 014
S                                                                                                                                                           05 for Ver 000    01 for Ver 000

 Q
 B
 8
 0                                                                                                                                                | 128056        04/18/66 | Mach          2030       | Date  11/07/67          Sheet    1  QB801 |
 1                                                                                                                                                | 128058        06/21/66 | Name                     | Log    2046             Version           |
                                                                                                                                                  | 128065        07/26/67 | Mode          Manual     |                                           |
                                                                                                                                                  |                        | P.N.          837440     |    Priority Controls Test                 |
                                                                                                                                                  |                        | IBM Corp.                |    ID 3347                                |