!!! ANOUNCEMENT !!!

Severaì  ne÷  featureó arå containeä iî thå 10/15/8²  releaså  oæ �
youò XOR CP/M.

1.)  DIAGNOSE.COM  is an automatic,  non-destructive system  test 
utilitù  thaô wilì tesô systeí memorù anä botè drives®  Iô shoulä �
bå ruî beforå drivå "B:¢ haó beeî accessed®  Thå testó takå abouô  �
µ  minuteó tï ruî anä assurå everythinç ió iî gooä shapå  tï  ruî �
youò software®  Datá ió outpuô tï systeí printeò sï yoõ  neeä noô �
waiô anä watcè thå screen® (Got tï keeð uð witè IBÍ yoõ know!)

2.) BACKUP.COM   will help first time  users  make  that  initial 
important backup of their CP/M source disks. BACKUP should be the 
FIRST  program  that you run after receiving your  computer.  The 
source  disk  goes in drive "A" and a blank destination  disk  in 
drive "B".  BACKUP will format the destination disk and copy A to 
B.  (In all XOR systems drive "A" is on the left and drive "B" is 
on the right.)

3.© HELP.COÍ wilì aiä firsô useró oæ CP/M¬  BASIC¬ anä manù otheò �
ruî  timå programs®  Simplù typå HELÐ CPÍ <CR¾ oò HELÐ MBASIà oò �
whateveò  ???.HLР prograí  librarieó appeaò    oî  youò  currenô �
distribution disks. To see what they might be, type D *.HLP <CR>.

4.) Maybe this is not a feature but it does have to be mentioned. 
If  your  drives are made by  TANDON,  (a slimline  with  closing 
lever  at the upper right) the disks are to be inserted with  the 
label (top) to the RIGHT. This is different than the other models 
used in XOR systems in the past.

5.© Thå disë driveró foò 4¸ anä 9¶ tpi¬  singlå anä doublå  sideä �
miné  5¢ driveó  havå  beeî turneä oî iî thå distributioî versioî  �
oæ  thå CP/Í "A¢ anä "B¢ disks®   Wå stronglù  recommenä (iî facô �
insist?©  thaô yoõ uså thå 51² bytå peò sectoò modå foò  alì  thå �
miné  types®   Tï  ruî minió witè 8¢ drives¬   simplù pluç iî thå �
driveó  anä  ruî DFOCÏ tï formaô thå minis®  Thå commanä linå  tï �
correctlù formaô á 9¶ tpé doublå sideä drivå iî DFOCÏ woulä be» 

* DFORMAT C: SIZE 512 MINI96 DBL <CR>

We  are assuming drives "A" and "B" are 8" and drives "C" and "D" 
are strapped as minis.

After  formatting  and PIPing data to  the  mini,  the  operating 
system  may  be transferred to the mini useing DSYSGEN.  See  the 
manual for specifics on using DSYSGEN.  Transfer method  #3 where 
you  answer <CR>,  <CR> to the first two questions and then  take 
the  OS directly from the 8" floppy and put it on the mini  would 
be the easiest to do. After successfully accomplishing the  above 
two feats,  re-strapping the floppy controller so that the  minis 
are "A" and "B" will allow you to boot from them after a reset.

Somå   problemó  havå  beeî  noticeä  bootinç  miné  floppieó  bù �Šcertaiî  manufacturers®  Iô wilì worë buô sometimå noô alwayó  oî �
thå  firsô try®  Iô ió causeä bù á drivå readù signaì noô   beinç �
availablå aó ió oî 8¢ systems®  Á ne÷ versioî oæ thå 1.8´ proí ió �
supposeä tï helð thå problem.

8 INCH JUMPER STRAPS AS SHIPPED FROM FACTORY    A,B = 8" C,D = MINI


     O O O O O O O O               O O O O O O O O
         | | |                     | |___    |   |
         | | |                     |___  |   |   |
         | | |                         | |   |   |
     O O O O O O O O               O O O O O O O O


5 INCH AS A and B


     O O O O O O O                 O O O O O O O O
                                   | |       |   |
                                   | |       |   |  
                                   | |       |   |
     O O O O O O O                 O O O O O O O O


6.©  Á  paralleì printeò driveò haó beeî installeä iî  thå   bioó  �
STDLST.ASM®   Thió  driveò caî bå useä foò centronicó  typå cablå  �
interfaces®  (Seå thå appendiø foò paralleì cablå wiring.©  Threå �
methodó  maù bå useä tï "turî on¢ thió driver®   Aó  shippeä  thå �
bioó  driveó  thå seriaì porô "A¢ oî thå CPÕ witè alì  CP/Í  lisô �
output®  Tï switcè alì outpuô tï thå paralleì porô oî á temporarù �
basió yoõ caî seô á bytå iî memorù aô EE33È tï á 01H®   Thió  caî �
bå  donå witè DDÔ oò BASIÃ witè "POKE¢ instruction®   Thió memorù �
caî  bå calculateä foò differenô systeí sizeó bù pickinç  uð  thå �
thå  bioó  jumð tablå anä caî bå calculateä foò differenô  systeí �
sizeó  bù  pickinç  uð thå warí  booô  entrù  addresó  aô  memorù �
locatioî  ±  anä 2¬  anä addinç 30È tï thaô address®   (30È ½  4¸ �
decimal)

A second method,  which is permanent for the disk that the change 
was  made  on  and all copies of that disk is to use  the  system 
utility DDUMP.COM  to modify the byte on the system tracks of the 
floppy. You will find the bios jump table on track 1 sector 20. 

DDUMP <CR>
T 1 S 20 EDIT <CR>
33 <CR>
01 <CR>
.  <CR>
WRITE <CR>
^C

A third method is to use a text editor to modify the bios  source 
code  module IO.ASM which contains the bios jump table.  You will 
need  the Digital Research MAC assembler to do this.  It  may  be 
purchased from your closest U S MICRO SALES distributor.
Š
Obviously if you should want to switch back to serial output, the 
same byte should be set to a "0".

Notå thaô anotheò compleø printeò driveò optioî haó beeî supplieä  �
iî  thå forí oæ CXLST.ASÍ anä itó   associateä  PRINTER.COM®   Tï �
instalì  CXLSÔ  requireó  modifyinç  thå bioó  sourcå  modulå  bù �
editinç thå concatenatioî submiô commanä filå  BLKSYS61.SUB®   Iî �
thió commanä filå severaì moduleó arå concatenateä bù PIP.COÍ  tï  �
assemblå  thå  systeí  bios®   Thå distributioî  versioî containó �
á simplå driveò calleä STDLST.ASM® Bù  replacinç  STDLST.ASÍ witè �
CXLST.ASÍ   anä   re-assemblinç  thå bios¬   uð  tï  siø  printeò �
driveró caî bå residenô iî thå bioó  aô onå  time® 

PRINTER.COM  will select  the printers by simply typing PRINTER 3 
(for example).  PRINTER.COM can also change the baud rate that is 
supplied  to  the respective printer.  Source code to PRINTER  is 
supplied on your "B" system disks.

Custoí  PRINTER.COÍ  typå  programó caî bå  writteî  anä  renameä �
DIABLO.COÍ oò MX80.COÍ oò TI810.COÍ (foò example)®  Theså caî  bå �
verù  simplå  programó  thaô merelù modifù onå oò  twï  celló  iî �
systeí  memory®  Thå  celì  aô  003DÈ ió  useä  tï  indicatå  thå �
currentlù   loggeä  printeò anä thå onå aô 003CÈ tï seô thå  bauä �
rate®  Á  "0¢  aô  003DÈ meanó thå printeò attacheä tï  thå   CPU �
channeì   "A¢   seriaì  porô ió selected®  Thió ió printeò  £  1®  �
CXLSÔ  alwayó  initializeó  tï  thió printer®  Printeró 2,3,´ anä �
µ  arå  expecteä tï bå oî aî  optionaì seriaì   expansioî   boarä  �
thaô  ió  availablå  froí youò  U.S®   MICRÏ  SALEÓ  distributor®  �
Printeò  ¶ ió expecteä tï bå thå paralleì porô oî  thå  CPU®   Aî �
examplå oæ á prograí thaô woulä  selecô  printeò numbeò ³ anä seô �
thå bauä ratå tï 120° bauä ió aó follows:

ORG 100H

START:
          MVI  A,03H          ; printer select
          STA  003DH          ; cxlst will look here
          MVI  A,07H          ; see CPU manual for binary bauds
          STA  003CH          ; upper nib is left brg, lower is
          RET                 ; right, here we pgm the right.


The  baud rate port on the CPU is at I.O.  port location  0BH.  A 
slight complication arises in that you probably would not wish to 
change  the baud that the system terminal is running at.  In this 
case you would have to read the CPU baud rate switch and ORI  the 
upper  4  data  bits  on  to your new lower  4  bits  before  re-
programming the brg.  Look at how things are done in  PRINTER.ASM 
as an example if you have any problems.

Anotheò  commoî probleí wå geô calló oî bearó mentioning®  Iô  ió �
explaineä  iî  thå Generaì Operatinç proceedureó sectioî oæ  youò �
manueì  ho÷  tï  puô  thå operatinç systeí  froí  onå  diskeô  tï �
another¬ buô foò somå reasoî manù customeró don'ô understanä froí �Šthå  reading®  Iæ yoõ wanô tï transfeò thå operatinç systeí  froí �
onå disë tï another¬  simplù loaä DSYSGEÎ anä answeò (N© anä  (N© �
tï thå firsô twï questionó thaô comå oî thå screen®  Á tablå wilì �
theî appeaò witè á sub-linå askinç "CODÅ BYTEÓ FOÒ SOURCÅ DISK?".
Usuallù  yoõ  wilì neeä tï enteò 1A¬  whicè  signifieó  51²  bytå �
singlå sided®  Thå otheò commoî codå bytå ió 9A¬ whicè ió foò 51² �
bytå  sectors¬  buô doublå sided®  Afteò determininç thå typå  oæ �
sourcå  disë anä drivå name¬  hiô á <CR¾ tï "CONTINUE"®  Thå nexô �
questioî  askeä  wilì bå foò thå codå bytå  foò  thå  destinatioî �
disk®  Afteò  tellinç dsysgeî thå typå anä drive¬  iô wilì dï thå �
transfer® It'ó reallù verù simplù anä shoulä takå nï morå thaî 1µ �
secondó  tï do®  Iæ yoõ finä yourselæ welì intï thå  firsô  hour¬ �
REAÄ THÅ MANUAL®  Therå ió á steð bù steð examplå iî there® Don'ô �
forgeô  thaô thå destinatioî disë musô havå á suitablå formaô  oî �
it® Iæ youò noô surå oî thió point¬ uså DFOCÏ tï formaô thå disk.


.pa
ŠCPU INFO -

Port assignments:

     00   Channel "A" status (See status flag below)
     01   Channel "A" data
     02   Channel "B" status (See status flag below)
     03   Channel "B" data
     04   Parallel "A" data
     05   Parallel "B" data
     06   Parallel "C" data
     07   Parallel command port
     08   Memory management
     09   Prom Toggle, 00 = on   01 = off
     0A   Boot prom disable
     0B   Read/ Baud rate switch   Write/ Baud rate generator
     0C   CTC chan 1
     0D   CTC chan 2
     0E   CTC chan 3
     0F   CTC CMD

Thå  825± caî bå programmeä undeò softwarå controì tï dï á numbeò �
oæ  things®   Thå followinç codå caî bå useä tï  initializå  whaô �
might be a "normal" mode for the 8251.
( The chip must be initialized or it will do nothing. )


             MVI A,0AAH    ; Load A
             OUT 03        ; Initialize Port B
             OUT 01        ; Initialize Port A
             MVI A,40H     ; Load A
             OUT 03        ; With Internal Reset
             OUT 01        ; Write to Both Ports
             MVI A,4EH     ; 1 Stop bit, no parity, 8 data bits
             OUT 01        ; 16X clock
             OUT 03        ;
             MVI A,37H     ; RTS = 1, reset errors, enable Rx,
             OUT 01        ; DTR = 1, Tx enabled
             OUT 03        ;


Thió initializatioî wilì seô uð ¸ datá bits¬  onå stoð biô anä nï �
parity®  Youò printeró anä terminaló havå tï bå seô uð tï receivå �
the same pattern.
 
825± Statuó Flagó (wheî yoõ inpuô statuó port¬  thió ió whaô bytå �
will mean):

Bit:  07  06  05  04  03  02  01  00
      -------------------------------
     DSR  SY  FE  OE  PE  TXE RXR TXR <-Output bit (RDY when Hi)
                               A 
                               |--------Input bit (RDY when Hi)

.pa
ŠPorts for the Serial IO are: A Status = 1   A Data = 0 (on left)
                             B Status = 3   B Data = 2 (on right)

Thå  ¸ positioî DIÐ switcè aô thå loweò righô hanä corneò oæ  thå �
boarä ió brokeî intï twï ´ biô sections®  Thå uppeò ´ bitó selecô �
thå  IÏ  bauä foò thå lefô 825± anä thå loweò ´ bitó  selecô  thå �
bauä  foò thå right®   Wå connecô thå lefô 825± tï thå "A¢ paddlå �
carä anä thå righô onå tï thå "B¢ paddlå card®   Thå paddlå cardó �
arå  mounteä  tï thå reaò paneì anä  makå  strappinç  adjustmentó �
easier®   Thå  "A¢ porô ió committeä iî thå CP/Í bioó softwarå tï �
the printer, and the "B" port to the CRT Terminal. 

Thå  switcheó  arå useä iî á binarù patterî tï seô thå  rateó  aó �
follows:

                          DIP
                         Switch
                         
                      ON        OFF
                       ___________
                    A |         []|  Serial
                    B |[]         |  Port A (Left) [Printer]
                    C |         []|  Set for          
                    D |[]         |  300 BAUD
                   ---|-----------|-------------------
                    A |[]         |  Serial 
                    B |         []|  Port B (Right) [Terminal]
                    C |         []|  Set for 
                    D |         []|  9600 BAUD
                      |___________|   


                X  =  O F F        O  =  O N 


Baud     D  C  B  A                 Baud      D  C  B  A
-------|-----------                 --------|-----------
 5°    ü Ï  Ï  Ï  Ï  ¨ 00È ©          1200  ü Ï  Ø  Ø  Ø  ( 07È )
 75    | O  O  O  X  ( 01H )          1800  | X  O  O  O  ( 08H )
110    | O  O  X  O  ( 02H )          2000  | X  O  O  X  ( 09H )
134.5  | O  O  X  X  ( 03H )          2400  | X  O  X  O  ( 0AH )
150    | O  X  O  O  ( 04H )          3600  | X  O  X  X  ( 0BH )
300    | O  X  O  X  ( 05H )          4800  | X  X  O  O  ( 0CH )
60°    ü Ï  Ø  Ø  Ï  ¨ 06È ©          720°  ü Ø  Ø  Ï  Ø  ( 0DH )�
       |                              9600  | X  X  X  O  ( 0EH )
       |                             19200  | X  X  X  X  ( 0FH )
                                                      
N O T E :
Makå  surå wheî usinç thå abovå charô thaô thå positionó wå  sho÷ 
corresponä  tï  thå typå oæ switcè yoõ havå oî thå  board®   Somå 
models of switches have the "ON" to the opposite side.
.pa
Š
                SOME TIPS ON HOOKING UP PRINTERS

 Almosô alì seriaì printeró uså fouò basiã lines®  Ouò  computeró �
"look¢  likå modemó iî termó oæ RS-23²  specifications®  Thaô  ió �
becauså  originallù terminaló attacheä themselveó tï modemó  thaô �
iî turî talkeä oveò phonå lineó tï mainframes®  Wheî cheað Micro�
computeró  camå  oî  thå scenå iô waó logicaì tï makå  theí  pluç �
directlù intï thå terminals® 
 Thå minimuí lineó needeä tï maintaiî communicatioî arå Transmit¬ �
Receive¬  Logiã  Ground¬  anä Framå Ground®  Theså arå oî á DB-2µ �
connectoò oî pinó 3,2,· anä ± respectively.
 Theså  termó onlù holä truå iæ yoõ arå á modem®  DB-2µ connectoò �
piî assignmentó shoulä alwayó bå referreä tï aó iæ thå modeí  waó �
thå  subject®  Thereforå  iæ piî 3 ió "Transmit"¬  iæ yoõ  arå  á �
terminal¬ yoõ shoulä receivå oî piî 3® 
 Therå arå otheò signaló oî á DB-2µ RS-23² seriaì connectoò  thaô �
arå  standard®  Theså signaló werå originallù intendeä foò  modeí �
uså  anä  theiò nameó reflecô theså  intentions®  Theù  are»  CTÓ �
(Cleaò  tï send)¬  RTÓ (Requesô tï send)¬  DSÒ (Datá seô  ready)¬ �
DTR (Data terminal ready).
 Theså  "secondarù signals¢ aó theù arå calleä arå useä tï inforí �
thå  terminaì  useò wheî thå computeò anä transmissioî  equipmenô �
caî senä data.
 Wheî attachinç á printer¬ wå uså thå principaì signaló tï conveù �
datá iî botè directionó anä thå secondarù signaló tï "handshake"® �
Tï  handshakå meanó tï inforí eacè otheò wheî yoõ arå prepareä tï �
communicate®  It'ó ratheò likå pickinç uð thå phonå afteò hearinç �
iô  rinç  anä sayinç "Hello"®  Theî thå otheò  persoî  identifieó �
himself¬ anä sï on®  Humanó "handshake¢ iî manù wayó thaô arå noô �
readilù apparent® Facinç someonå anä noddinç youò heaä tï starô á �
conversation is "handshaking".
 Oî  ouò Paddlå cardó aô thå bacë oæ thå computeò arå placeó  foò �
twï  resistors®  Theù arå calleä "pulì up¢ resistoró anä musô  bå �
installeä  iæ  thå seriaì porô handshakinç lineó DSÒ anä CTÓ  arå �
noô tï bå used®  These resistoró caî bå anythinç froí 1Ë tï  10K® �
Iæ  buffeò fulì handshakinç ió tï bå used¬  thå correcô linå musô �
bå  locateä  whicè indicateó thaô statuó oî thå printeò  yoõ  arå �
using®  Thå resistoò "pullinç up¢ thå statuó linå yoõ wisè tï uså �
musô  bå  removeä (eitheò caî bå used)¬  anä  á  jumpeò  soldereä �
betweeî  thå  RS-23² linå anä placå wherå thå resistoò  was®  Thå �
otheò  availablå  handshakinç linå caî bå useä foò OΠ LINE¯  OFÆ �
LINÅ  statuó oò ??®  Buô foò anù transmissioî tï takå placå  botè �
seriaì  unitó  musô bå aô thå samå bauä ratå anä  botè  handshakå �
lines must be acive (high).

NOTE: Pin 20, DTR ----->  | Will not work on 8251, use CTS, pin 5
          14 _____________V__________ 25
 DB-25      / . . . . . . . . . . . .\   - As a MODEM appears -
           / . . . . . . . . . . . . .\    ( and your computer )
            -------------------------- 13
             1 2 3 4 5 6 7
             F T R R C D G         8 DATA BITS, 1 STOP, NO PARITY
             R X X T T S N
             M     S S R D
Š 


                     PARALLEL CABLE WIRING

     This cable is used  for  Centronics interface printers.   It 
uses a 8255,  PA0-7 are used for data transfer,   PB0-7  are tied 
together for data strobe PC6 for ACK from printer.

NOTEº   Thió  cablå  ió  availablå  froí youò  Õ  Ó  MICRÏ  SALEÓ �
distributor.   

   26 Pin                                               36 Pin
--------------                                     --------------
 CPU CABLE   |                                     |   CENT. CONN.
    (1)  AD0 |---------------     ->      ---------|D0      (2)
    (2)  AD1 |---------------     ->      ---------|D1      (3)  P
    (3)  AD2 |---------------     ->      ---------|D2      (4)  R
 8  (4)  AD3 |---------------     ->      ---------|D3      (5)  I
 2  (5)  AD4 |---------------     ->      ---------|D4      (6)  N
 5  (6)  AD5 |---------------     ->      ---------|D5      (7)  T
 5  (7)  AD6 |---------------     ->      ---------|D6      (8)  E
    (8)  AD7 |---------------     ->      ---------|D7      (9)  R
             |                                     |______
 (9-16)BD0-7 |===============     ->      ---------|STROBE  (1)
             |                                     |
   (21)  CD4 |---------------     <-      ---------|ON LINE (13)
             |                                     |
   (22)  CD5 |---------------     <-      ---------|BUSY    (11)   
             |                                     |___
   (23)  CD6 |---------------     <-      ---------|ACK     (10)
             |                                     |
   (26)  GND |---------------     <->     ---------|GND     (17)
             |                                     |
--------------                                     -----------------

CPÕ  825µ connectoò pinouô lookinç froí fronô witè edgå connectoò �
aô bottom.
            2 4 6 8                 26        Serial Conn.
           ___________________________       ______________
          | . . . . . . . . . . . . . |      |. . . . . . |    
 |--------| . . . . . . . . . . . . . |\-----|. . . . . . |\----|
 |         --------------------------- |      ------------  |   |
 |         \__________________________\|      \____________\|   |
 |          1 3 5 7 9               25                          |
 |                                                              |
 |                                                              |
 |                      CPU Component Side                      |
 ü                                                              |�
 |                                                              |

                                                 �

                   - XOR data sciences, inc. -