83Plus:Hooks:9BB0 - Revision history

KermMartian: /* Comments */

2015-05-09T15:29:39Z

‎Comments

Mmartin: /* Using the Hook */

2006-07-21T13:51:33Z

‎Using the Hook

JasonM at 02:19, 2 April 2005

2005-04-02T02:19:56Z

FloppusMaximus: /* Comments */

2005-03-30T22:41:51Z

‎Comments

FloppusMaximus at 05:12, 30 March 2005

2005-03-30T05:12:09Z

FloppusMaximus: categorized

2005-03-28T17:00:12Z

categorized

Mmartin at 09:02, 28 March 2005

2005-03-28T09:02:44Z

FloppusMaximus at 08:03, 28 March 2005

2005-03-28T08:03:42Z

FloppusMaximus at 07:58, 28 March 2005

2005-03-28T07:58:34Z

New page

'''Note:''' Do not take the information on this template page as actual documentation!

The Hooks are named by their hook pointer block address (the four bytes consisting of page, address, and an extra byte), in hexadecimal. An example is [[83Plus:Hooks:9B84]].

----

== Synopsis ==
'''Name:''' ImAHook

'''Hook Pointer Block Address:''' [[83Plus:RAM:8562|8562]]

'''Hook Enable BCALL:''' [[83Plus:BCALLs:1234|1234]]

'''Hook Disable BCALL:''' [[83Plus:BCALLs:5678|5678]]

'''Hook Call BCALL:''' [[83Plus:BCALLs:9012|9012]]

'''Hook Active Flag:''' 6, (iy + 23h)

This hook allows you to change the values that [[83Plus:BCALLs:4972|GetKey]] returns.

== Using the Hook ==
These different values, passed in a, determines what the hook should do.
* 1: The calculator just turned on. There seem to be no other values passed to the hook.
* 2: The calculator is computing 1+1.
** b: 1
** c: 1
** Change b and/or c to affect the output of the problem (which will still look like 1+1 to the user).
* 3: Preparing to turn off due to 2nd+OFF.
** Zero flag: Clear to abort the power off.

== Comments ==
This hook doesn't exist. This is a demonstration only.

== Credits and Contributions ==
* '''/dev/hda1:''' My favorite hard drive partition.

← Older revision		Revision as of 15:29, 9 May 2015
Line 25:		Line 25:

	== Comments ==		== Comments ==
−	~~TIOS~~ completely ignores the output of this hook. You can force TIOS to go certain apps by using the JForce... B_JUMPs. (These B_JUMPs are probably not intended to be used inside this hook, so this may or may not be safe, depending on the apps involved.)	+	On known monochrome TI-83 Plus/TI-84 Plus calculators, the TI-OS completely ignores the output of this hook. You can force TIOS to go certain apps by using the JForce... B_JUMPs. (These B_JUMPs are probably not intended to be used inside this hook, so this may or may not be safe, depending on the apps involved.) On the TI-84 Plus C Silver Edition, you must preserve A and HL, because the OS does ''not'' ignore these values. However, it's not known if modifying A and HL is a "safe" way to change which new context is launched.

@@ Line 21: / Line 21: @@
 ** Turning the calculator off from most apps: A = 2
 ** Exiting an external app: A = 0
 ** Turning the calculator off from the graph screen (possibly others): A = 0
 == Comments ==
 TIOS completely ignores the output of this hook.  You can force TIOS to go certain apps by using the JForce... B_JUMPs. (These B_JUMPs are probably not intended to be used inside this hook, so this may or may not be safe, depending on the apps involved.)

@@ Line 1: / Line 1: @@
 [[Category:83Plus:Hooks:By_Name|App Change Hook]] [[Category:83Plus:Hooks:By_Address|9BB0 - App Change Hook]]
 == Synopsis ==
-'''Name:''' App Change Hook
+'''Name:''' App Change Hook ''(also called the Context Switch hook)''
 '''Hook Pointer Block Address:''' [[83Plus:RAM:9BB0|9BB0]]

← Older revision		Revision as of 22:41, 30 March 2005
Line 24:		Line 24:

	== Comments ==		== Comments ==
−	TIOS completely ignores the output of this hook. You can force ~~tios~~ to go ~~a few~~ apps by using the JForce... B_JUMPs. (These B_JUMPs are probably not intended to be used inside this hook, ~~thus it might screw up something in~~ the os)	+	TIOS completely ignores the output of this hook. You can force TIOS to go certain apps by using the JForce... B_JUMPs. (These B_JUMPs are probably not intended to be used inside this hook, so this may or may not be safe, depending on the apps involved.)

@@ Line 1: / Line 1: @@
-[[Category:83Plus:Hooks:By_Name|App Change Hook]]
+[[Category:83Plus:Hooks:By_Name|App Change Hook]] [[Category:83Plus:Hooks:By_Address|9BB0 - App Change Hook]]
 [[Category:83Plus:Hooks:By_Address|9BB0 - App Change Hook]]
 == Synopsis ==
 '''Name:''' App Change Hook

← Older revision		Revision as of 17:00, 28 March 2005
Line 1:		Line 1:
		+	[[Category:83Plus:Hooks:By_Name\|App Change Hook]]
		+	[[Category:83Plus:Hooks:By_Address\|9BB0 - App Change Hook]]
	== Synopsis ==		== Synopsis ==
	'''Name:''' App Change Hook		'''Name:''' App Change Hook

← Older revision		Revision as of 09:02, 28 March 2005
Line 23:		Line 23:

	== Comments ==		== Comments ==
−	TIOS completely ignores the output of this hook.	+	TIOS completely ignores the output of this hook. You can force tios to go a few apps by using the JForce... B_JUMPs. (These B_JUMPs are probably not intended to be used inside this hook, thus it might screw up something in the os)

@@ Line 1: / Line 1: @@
 == Synopsis ==
-'''Name:''' ImAHook
+'''Name:''' App Change Hook
-'''Hook Pointer Block Address:''' [[83Plus:RAM:8562|8562]]
+'''Hook Pointer Block Address:''' [[83Plus:RAM:9BB0|9BB0]]
-'''Hook Enable BCALL:''' [[83Plus:BCALLs:1234|1234]]
+'''Hook Enable BCALL:''' [[83Plus:BCALLs:502C|502C]]
-'''Hook Disable BCALL:''' [[83Plus:BCALLs:5678|5678]]
+'''Hook Disable BCALL:''' [[83Plus:BCALLs:502F|502F]]
-'''Hook Call BCALL:''' [[83Plus:BCALLs:9012|9012]]
+'''Hook Call BCALL:''' ''(none known)''
-'''Hook Active Flag:''' 6, (iy + 23h)
+'''Hook Active Flag:''' [[83Plus:Flags:36#Bit_2|2, (iy + 36h)]]
-This hook allows you to change the values that [[83Plus:BCALLs:4972|GetKey]] returns.
+This hook is called at any time that TIOS changes from one app to another.  Also called when the calculator is turned off.
 == Using the Hook ==
-These different values, passed in a, determines what the hook should do.
-* 1: The calculator just turned on. There seem to be no other values passed to the hook.
+* B = current app
-* 2: The calculator is computing 1+1.
+** Switching from one app to another: A = new app
-** b: 1
+** Turning the calculator off from most apps: A = 2
-** c: 1
+** Exiting an external app: A = 0
-** Change b and/or c to affect the output of the problem (which will still look like 1+1 to the user).
+** Turning the calculator off from the graph screen (possibly others): A = 0
-* 3: Preparing to turn off due to 2nd+OFF.
-** Zero flag: Clear to abort the power off.
 == Comments ==
-This hook doesn't exist. This is a demonstration only.
+TIOS completely ignores the output of this hook.
-−
-== Credits and Contributions ==
-* '''/dev/hda1:''' My favorite hard drive partition.