HackMac: add new article for internal CRU usage in the TI-99/4A

2015-11-14T16:42:10Z

add new article for internal CRU usage in the TI-99/4A

New page

== Definitions ==

For a introduction and usage of the CRU see [[Geneve CRU definitions]]
{| style="width:80%; padding-top:3em"
|-
| colspan="6" style="background-color:lightgray; text-align:center" | TMS 9901
|-
| style="width:8%; font-weight:bold" | Address in R12
| style="width:8%; font-weight:bold" | Bit
| style="width:8%; font-weight:bold" | Kind
| style="width:8%; font-weight:bold" | Default
| style="width:8%; font-weight:bold" | Function
| style="font-weight:bold" | Meaning
|-
| 0000
| 0
| -
| 0
| control
| mostly 0 (Interrupt mode)
|-
| 0002
| 1
| in
| -
| INT1
| EXT. INT, Interrupt vector >0004
|-
| 0004
| 2
| in
| -
| INT2
| VDP INT, Interrupt vector >0008
|-
| 0006
| 3
| in
| -
| INT3
| Return value from keyboard (depends on set value of P2-P4) for the keys "=", ".", ",", "M", "N", "/", fire button Joystick 1 and 2
|-
| 0008
| 4
| in
| -
| INT4
| Return value from keyboard (depends on set value of P2-P4) for the keys " ", "L", "K", "J", "H", ";", left for Joystick 1 and 2
|-
| 000A
| 5
| in
| -
| INT5
| Return value from keyboard (depends on set value of P2-P4) for the keys ENTER, "O", "I", "U", "Y", "P", right for Joystick 1 and 2
|-
| 000C
| 6
| in
| -
| INT6
| Return value from keyboard (depends on set value of P2-P4) for the keys "9", "8", "7", "6", "0", down for Joystick 1 and 2
|-
| 000E
| 7
| in
| -
| INT7
| Return value from keyboard (depends on set value of P2-P4) for the keys FCTN, "2", "3", "4", "5", "1", up for Joystick 1 and 2 and ALPHA-LOCK
|-
| 0010
| 8
| int
| -
| INT8
| Return value from keyboard (depends on set value of P2-P4) for the keys SHIFT, "S", "D", "F", "G", "A"
|-
| 0012
| 9
| in
| -
| INT9
| Return value from keyboard (depends on set value of P2-P4) for the keys CTRL, "W", "E", "R", "T", "Q"
|-
| 0014
| 10
| in
| -
| INT10
| Return value from keyboard (depends on set value of P2-P4) for the keys "X", "C", "V", "B", "Z"
|-
| 0016
| 11
| in
| 1
| INT11
| -
|-
| 0018
| 12
| in
| 1
| INT12
| -
|-
| 001A
| 13
| in
| 1
| INT13
| -
|-
| 001C
| 14
| in
| 1
| INT14
| -
|-
| 001E
| 15
| in
| 1
| INT15
| -
|-
| 0020
| 16
| -
| -
| P0
| -
|-
| 0022
| 17
| -
| -
| P1
| -
|-
| 0024
| 18
| out
| -
| P2
| rowspan="2" | P2-P4 is the row number which selects the column of the keyboard matrix
|-
| 0026
| 19
| out
| -
| P3
|-
| 0028
| 20
| out
| -
| P4
|-
| 002A
| 21
| out
| -
| P5
| set to one for asking ALPHA-LOCK status at INT7
|-
| 002C
| 22
| out
| 0
| P6
| Motor control for CS1
|-
| 002E
| 23
| out
| 0
| P7
| Motor control for CS2
|-
| 0030
| 24
| out
| -
| P8
| Audio gate
|-
| 0032
| 25
| out
| -
| P9
| Output for CS1 and 2
|-
| 0034
| 26
| in
| -
| P10
| Input for CS1 and 2
|-
| 0036
| 27
| -
| -
| P11
| -
|-
| 0038
| 28
| -
| -
| P12
| -
|-
| 003A
| 29
| -
| -
| P13
| -
|-
| 003C
| 30
| -
| -
| P14
| -
|-
| 003E
| 31
| -
| -
| P15
| -
|}

[[Category:TI-99/4A]]

TI-99/4A CRU definitions - Revision history

HackMac: add new article for internal CRU usage in the TI-99/4A