/* ps2kbd.h -- Very simple PS/2 keyboard simulation header file
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/* ps2kbd.h -- Very simple PS/2 keyboard simulation header file
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Copyright (C) 2002 Marko Mlinar, markom@opencores.org
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Copyright (C) 2002 Marko Mlinar, markom@opencores.org
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef _PS2KBD_H_
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#ifndef _PS2KBD_H_
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#define _PS2KBD_H_
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#define _PS2KBD_H_
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/* Device registers */
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/* Device registers */
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#define KBD_CTRL 4
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#define KBD_CTRL 4
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#define KBD_DATA 0
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#define KBD_DATA 0
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#define KBD_SPACE 8
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#define KBD_SPACE 8
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/* Keyboard commands */
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/* Keyboard commands */
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#define KBD_KCMD_RST 0xFF
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#define KBD_KCMD_RST 0xFF
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#define KBD_KCMD_DK 0xF5
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#define KBD_KCMD_DK 0xF5
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#define KBD_KCMD_EK 0xF4
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#define KBD_KCMD_EK 0xF4
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#define KBD_KCMD_ECHO 0xFF
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#define KBD_KCMD_ECHO 0xFF
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#define KBD_KCMD_SRL 0xED
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#define KBD_KCMD_SRL 0xED
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/* Keyboard responses */
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/* Keyboard responses */
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#define KBD_KRESP_RSTOK 0xAA
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#define KBD_KRESP_RSTOK 0xAA
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#define KBD_KRESP_ECHO 0xEE
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#define KBD_KRESP_ECHO 0xEE
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#define KBD_KRESP_ACK 0xFA
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#define KBD_KRESP_ACK 0xFA
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/* Controller commands */
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/* Controller commands */
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#define KBD_CCMD_RCB 0x20
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#define KBD_CCMD_RCB 0x20
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#define KBD_CCMD_WCB 0x60
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#define KBD_CCMD_WCB 0x60
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#define KBD_CCMD_ST1 0xAA
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#define KBD_CCMD_ST1 0xAA
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#define KBD_CCMD_ST2 0xAB
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#define KBD_CCMD_ST2 0xAB
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#define KBD_CCMD_DKI 0xAD
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#define KBD_CCMD_DKI 0xAD
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#define KBD_CCMD_EKI 0xAE
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#define KBD_CCMD_EKI 0xAE
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/* Status register bits */
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/* Status register bits */
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#define KBD_STATUS_OBF 0x01
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#define KBD_STATUS_OBF 0x01
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#define KBD_STATUS_IBF 0x02
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#define KBD_STATUS_IBF 0x02
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#define KBD_STATUS_SYS 0x04
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#define KBD_STATUS_SYS 0x04
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#define KBD_STATUS_A2 0x08
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#define KBD_STATUS_A2 0x08
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#define KBD_STATUS_INH 0x10
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#define KBD_STATUS_INH 0x10
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#define KBD_STATUS_MOBF 0x20
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#define KBD_STATUS_MOBF 0x20
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#define KBD_STATUS_TO 0x40
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#define KBD_STATUS_TO 0x40
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#define KBD_STATUS_PERR 0x80
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#define KBD_STATUS_PERR 0x80
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/* Command byte register bits */
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/* Command byte register bits */
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#define KBD_CCMDBYTE_INT 0x01
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#define KBD_CCMDBYTE_INT 0x01
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#define KBD_CCMDBYTE_INT2 0x02
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#define KBD_CCMDBYTE_INT2 0x02
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#define KBD_CCMDBYTE_SYS 0x04
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#define KBD_CCMDBYTE_SYS 0x04
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#define KBD_CCMDBYTE_EN 0x10
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#define KBD_CCMDBYTE_EN 0x10
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#define KBD_CCMDBYTE_EN2 0x20
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#define KBD_CCMDBYTE_EN2 0x20
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#define KBD_CCMDBYTE_XLAT 0x40
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#define KBD_CCMDBYTE_XLAT 0x40
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/* Length of internal scan code fifo */
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/* Length of internal scan code fifo */
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#define KBD_MAX_BUF 0x100
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#define KBD_MAX_BUF 0x100
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/* Keyboard is checked every KBD_SLOWDOWN cycle */
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/* Keyboard is checked every KBD_SLOWDOWN cycle */
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#define KBD_BAUD_RATE 1200
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#define KBD_BAUD_RATE 1200
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#endif /* !_PS2KBD_H_ */
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#endif /* !_PS2KBD_H_ */
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