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TABLE OF CONTENTS
Page
27.
OTHER SYSTEM FUNCTIONS
. . 27-01
27.1 Register Functions
27.1.1 Transfer X to B,A
. TXBA
27.1.2 Transfer
a,A
to X -- . TBAX
27.1.3 Exchange
B,A
~ith
X
. XBAX
27-01
27-02
. . 27-02
27-02
27.1.4 Add B
to
X -- .ADBX
27.1.5
Add A
to X -- .ADAX
27.
1.
6
Add B, A to
X -- .
ADBAX
27.1.7
Add X
to
B,A
~-
.ADXBA
27.1.8 Subtract B from X -- .SUBX
27.1.9 Subtract A from X -- .SUAX .
27.1.10 Subtract a,A from X -- .SUBAX
27.1.11 Subtract X from
a,A --
.SUXBA
B.A with X -- .
CPBAX
27.1.13 Shift X right -- . ASRX
27.1.14 Shift X left -- . ASLX .
27.
1.
15 Push X on stac k -- . PSHX
27. 1. 16 Pull X from stack -- . PULX
27.2 Double-byte Arithmetic Functions.
27.2.1 Add A to
memor~
-- .ADDAM
27.2.2 Subtract A from memory -- . SUBAM
27.2.3 Shift
memor~
right --
,DMA
27.2.4 Shift
memor~
left -- . MMA
27.3 Character String Functions
27.3.1 StTing move -- . MOVE
27.3.2 StTing comparison --
. . CMPAR
27.3.3
CharacteT-~ill
a string -- . STCHR
27.3.4 Blank-fill a string -- . STCHB
27.3.5 Test for alphabetic character -- . ALPHA
27.3.6 Test for decimal digit -- . NUMD
27. 4 Dis k e t t e F
i
1 e Fun c t ion s
. . . .
.
27.4.1 Directory search -- . DIRSM .
27-02
27-03
27-03
27-03
27-04
27-04
27-04
27-05
. 27-05
27-05
27-05
27-06
27-06
27-06
27-07
27-07
27-07
27-08
27-08
27-08
27-09
27-10
27-10
27-11
27-11
27-11
. 27-14
27-17
27-20
27-25
27-28
27.4.2 Change file name/attributes -- . CHANG
27.4.3 Load program into memory -- . LOAD
27.4.4 Allocate diskette space -- . ALL DC
27.4.5 Deallocate diskette space -- .
DEALe
27.4.6 Display system error message -- . MOERR . 27-30
27-35
27-35
27-38
27-39
27-40
27-40
27.5 Other Functions
. . . . .
27.5.1 Process rile name -- .PFNAM
27.5.2 Re-enter resident MOOS -- . MDENT .
27.5.3 Reload MDOS from diskette -- . BOOT
27.5.4 Set system error status word
. EWORD
27.5.5 Allocate user program memory
~-
.ALUSM
28.
ERROR MESSAGES .
28.1 Diskette Controller Errors
28.1.1 Errors during initialization
28.1.2 Errors. after initialization
28.2 Standard Command Errors
28.3 Input/Ouput Functi9n Errors
28.4 System Error Status Word
28.5 Commands Affecting Error Status Word
28-01
28-01
28-01
28-05
28-06
28-18
28-19
28-20
Page
xii
.
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