Wang 700 Programming Functions

This is an explanation of advance programming codes, some of which are undocumented in Wang manuals. Most of these codes are used only in programs, although many of them work from the keyboard in Run mode.

Key Sequence Code Function

"Write Alpha" Codes

WRITE ALPHA 1/X 04 12, 06 15 0.75 second pause

WRITE ALPHA 0-9 04 12, 07 xx X ×= 10^xx("0" means 10)

WRITE ALPHA (**) 04 12, 04 xx X ÷= 10^xx("0" means 10)

WRITE ALPHA GO 04 12, 05 14 X = 180 ÷ π

WRITE ALPHA STOP 04 12, 05 15 X = π ÷ 180

WRITE ALPHA GROUP2 04 12, 04 10 Skip if Y positive (Y ≥ 0)

WRITE ALPHA WRITE 04 12, 04 11 Skip if Y zero (Y = 0)

WRITE ALPHA SKIP IF ERROR 04 12, 05 10 Skip if Y negative (Y < 0)

WRITE ALPHA RETURN 04 12, 05 11 Skip if Y not zero (Y ≠ 0)

WRITE ALPHA LOG₁₀X 04 12, 06 10 Skip if X positive (X ≥ 0)

WRITE ALPHA LOG_eX 04 12, 06 11 Skip if X zero (X = 0)

WRITE ALPHA SET EXP 04 12, 07 10 Skip if X negative (X < 0)

WRITE ALPHA CHANGE SIGN 04 12, 07 11 Skip if X not zero (X ≠ 0)

Program Control

MARK mm 04 08, mm mm Set Label mm mm

SEARCH mm 04 07, mm mm Goto Label (MARK, mm mm)

* 00 00 - 03 15 Search+Return (Call) function (MARK, ff ff)

I/O Codes

WRITE xy* 04 11, xx yy
xx: 00-09
yy: 00-15 Print X to "Output Writer"
xx = integer places
yy = decimal places

WRITE y* 04 11, 12 yy Print yy blanks to "Output Writer"

WRITE ALPHA cc*...END ALPHA 04 12, cc cc ... 04 13 Prints string to OutputWriter
until END ALPHA encountered
cc cc must be 00 00 - 03 15 (print character), or
08 00 - 11 15 plot corresponding character 00 00 - 03 15 based on display X and Y

* 08 yy Page in/out blocks of program steps
to/from "Fixed/Removable Disk". Display Y is disk address, X is program step. 'yy' determines in/out and number of steps.

08 00 through 08 07 page-in blocks of program steps from "device 2". "Source" address is in Y (integer portion, 0 - 16M). In X is the starting program step number (integer portion, 0000 - 1983). Length determined by 'xx':

00 01 02 03 04 05 06 07

1 step 8 steps 16 steps 32 steps 64 steps 128 steps 256 steps (nothing)

08 08 through 08 15 page-out blocks of program steps to "device 2". "Destination" address is in Y (integer portion, 0 - 16M). In X is the starting program step number (integer portion, 0000 - 1983). Length determined 'xx':

08 09 10 11 12 13 14 15

1 step 8 steps 16 steps 32 steps 64 steps 128 steps 256 steps (nothing)

GROUP1 xx* 04 09, xx xx Output 'xx' to "device 4" (keyboard mode) or "device 6" (running program) and stop.
Device then takes over and issues GO when done.

GROUP2 xx* 04 10, xx xx Output 'xx' to "device 5" (keyboard mode) or "device 7" (running program) and stop.
Device then takes over and issues GO when done.

* Requires use of toggle switches in combination with keys 00-15 to form code.

** Requires either use of toggle switches in combination with keys 00-15 to form code, or knowledge of which key generates desired code.