83:Flags:09 - Revision history

AndyJ: template for unknown flags, yay

2005-05-31T03:14:46Z

template for unknown flags, yay

Kalimero: category

2005-04-14T13:55:29Z

Kalimero at 13:20, 14 April 2005

2005-04-14T13:20:18Z

New page

[[Category:83:Flags:By Address|09]]
[[Category:83:Flags:By Name|onFlags]]
[[Category:83:Flags:By Name|statFlags]]
== Synopsis ==
'''Flag Byte:''' 09h

'''Official Names:''' onFlags, statFlags

== Bit Overview ==

=== Bit 0 ===
Unknown.

=== Bit 1 ===
Unknown.

=== Bit 2 ===
'''Unofficial Name:''' onClrScrn

Set this flag if you want to clear the screen when the calculator is turned on. The bit will then be reset.
The OS only sets this bit inside [[83:ROMCalls:4062|Initialize]].

=== Bit 3 ===
'''Official Name:''' onRunning

This bit indicates whether the calculator is currently running or not. It is used by the on-key interrupt handler. When the calculator is not running, the interrupt handler will turn the calculator on. When the calculator is running an on-key press will either turn the calculator off or set bit 4 of this flag byte depending on shift2nd,(iy+[[83:Flags:12|shiftFlags]]).

=== Bit 4 ===
'''Official Name:''' onInterrupt

Set when the on-key was pressed when the calculator is currently running and 2nd has not been pressed. See also bit 3.
You should reset this bit to indicate that the on-key press has been handled. If you return from an assembly program to the TIOS with this bit set, an ERR:BREAK will be generated.

=== Bit 5 ===
Unknown.

=== Bit 6 ===
'''Official Name:''' statsValid

Set this bit to indicate that [[83:RAM:858F|statVars]] holds valid data. Reset this bit otherwise (e.g. when you use [[83:RAM:858F|statVars]] as a saferam area).

=== Bit 7 ===
Unknown.

@@ Line 10: / Line 10: @@
 === Bit 0 ===
-Unknown.
+{{Unknown-flag}}
 === Bit 1 ===
-Unknown.
+{{Unknown-flag}}
 === Bit 2 ===
@@ Line 33: / Line 33: @@
 === Bit 5 ===
-Unknown.
+{{Unknown-flag}}
 === Bit 6 ===
@@ Line 41: / Line 41: @@
 === Bit 7 ===
-Unknown.
+{{Unknown-flag}}

@@ Line 1: / Line 1: @@
-[[Category:83:Flags:By Address|09]]
+[[Category:83:Flags:By Address|09 - onFlags,statFlags]]
 [[Category:83:Flags:By Name|onFlags]]
 [[Category:83:Flags:By Name|statFlags]]