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|
/**************************************************************************
* arch/z80/src/z8/z8_xdef.S
* Interrupt Handling
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS or IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER or CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, or CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS or SERVICES; LOSS
* OF USE, DATA, or PROFITS; or BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, or TORT (INCLUDING NEGLIGENCE or OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
#include <ez8.inc>
#include <vect.inc>
/**************************************************************************
* Definitions
**************************************************************************/
/**************************************************************************
* External References / External Definitions
**************************************************************************/
#if defined(ENCORE_VECTORS)
xdef _z8_wdt_handler
xdef _z8_trap_handler
# if defined(EZ8_TIMER3)
xdef _z8_timer2_handler
# endif
xdef _z8_timer1_handler
xdef _z8_timer0_handler
# if defined(EZ8_UART0)
xdef _z8_uart0rx_handler
xdef _z8_uart0tx_handler
# endif
# if defined(EZ8_I2C)
xdef _z8_i2c_handler
# endif
# if defined(EZ8_SPI)
xdef _z8_spi_handler
# endif
# if defined(EZ8_ADC)
xdef _z8_adc_handler
# endif
xdef _z8_p7ad_handler
xdef _z8_p6ad_handler
xdef _z8_p5ad_handler
xdef _z8_p4ad_handler
xdef _z8_p3ad_handler
xdef _z8_p2ad_handler
xdef _z8_p1ad_handler
xdef _z8_p0ad_handler
# if defined(EZ8_TIMER4)
xdef _z8_timer3_handler
# endif
# if defined(EZ8_UART1)
xdef _z8_uart1rx_handler
xdef _z8_uart1tx_handler
# endif
# if defined(EZ8_DMA)
xdef _z8_dma_handler
# endif
# if !defined(EZ8_PORT1)
xdef _z8_c3_handler
xdef _z8_c2_handler
xdef _z8_c1_handler
xdef _z8_c0_handler
# endif
/**************************************************************************/
#elif defined(ENCORE_XP_VECTORS)
xdef _z8_wdt_handler
xdef _z8_trap_handler
# if defined(EZ8_TIMER3)
xdef _z8_timer2_handler
# endif
xdef _z8_timer1_handler
xdef _z8_timer0_handler
# if defined(EZ8_UART0)
xdef _z8_uart0rx_handler
xdef _z8_uart0tx_handler
# endif
# if defined(EZ8_I2C)
xdef _z8_i2c_handler
# endif
# if defined(EZ8_SPI)
xdef _z8_spi_handler
# endif
# if defined(EZ8_ADC) || defined(EZ8_ADC_NEW)
xdef _z8_adc_handler
# endif
xdef _z8_p7ad_handler
xdef _z8_p6ad_handler
xdef _z8_p5ad_handler
xdef _z8_p4ad_handler
xdef _z8_p3ad_handler
xdef _z8_p2ad_handler
xdef _z8_p1ad_handler
xdef _z8_p0ad_handler
# if defined(EZ8_TIMER4)
xdef _z8_timer3_handler
# endif
# if defined(EZ8_UART1)
xdef _z8_uart1rx_handler
xdef _z8_uart1tx_handler
# endif
# if defined(EZ8_DMA)
xdef _z8_dma_handler
# endif
# if !defined(EZ8_PORT1)
xdef _z8_c3_handler
xdef _z8_c2_handler
xdef _z8_c1_handler
xdef _z8_c0_handler
# endif
xdef _z8_potrap_handler
xdef _z8_wotrap_handler
/**************************************************************************/
#elif defined(ENCORE_XP16K_VECTORS)
xdef _z8_wdt_handler
xdef _z8_trap_handler
# if defined(EZ8_TIMER3)
xdef _z8_timer2_handler
# endif
xdef _z8_timer1_handler
xdef _z8_timer0_handler
# if defined(EZ8_UART0)
xdef _z8_uart0rx_handler
xdef _z8_uart0tx_handler
# endif
# if defined(EZ8_I2C)
xdef _z8_i2c_handler
# endif
# if defined(EZ8_ESPI)
xdef _z8_spi_handler
# endif
# if defined(EZ8_ADC_NEW)
xdef _z8_adc_handler
# endif
xdef _z8_p7ad_handler
xdef _z8_p6ad_handler
xdef _z8_p5ad_handler
xdef _z8_p4ad_handler
xdef _z8_p3ad_handler
xdef _z8_p2ad_handler
xdef _z8_p1ad_handler
xdef _z8_p0ad_handler
# if defined(EZ8_MCT)
xdef _z8_mct_handler
# endif
# if defined(EZ8_UART1)
xdef _z8_uart1rx_handler
xdef _z8_uart1tx_handler
# endif
xdef _z8_c3_handler
xdef _z8_c2_handler
xdef _z8_c1_handler
xdef _z8_c0_handler
xdef _z8_potrap_handler
xdef _z8_wotrap_handler
/**************************************************************************/
#elif defined(ENCORE_MC_VECTORS)
xdef _z8_wdt_handler
xdef _z8_trap_handler
xdef _z8_pwmtimer_handler
xdef _z8_pwmfault_handler
# if defined(EZ8_ADC_NEW)
xdef _z8_adc_handler
# endif
xdef _z8_cmp_handler
xdef _z8_timer0_handler
# if defined(EZ8_UART0
xdef _z8_uart0rx_handler
xdef _z8_uart0tx_handler
# endif
# if defined(EZ8_SPI)
xdef _z8_spi_handler
# endif
# if defined(EZ8_I2C)
xdef _z8_i2c_handler
# endif
xdef _z8_c0_handler
xdef _z8_pb_handler
xdef _z8_p7ap3a_handler
xdef _z8_p6ap2a_handler
xdef _z8_p5ap1a_handler
xdef _z8_p4ap0a_handler
xdef _z8_potrap_handler
xdef _z8_wotrap_handler
#endif
/**************************************************************************
* Macros
**************************************************************************/
ENTER : MACRO val
srp #%f0 /* Load the interrupt register pointer */
ld r0, #val /* Pass the new value in r0
jr _z8_common_handler /* The rest of the handling is common */
ENDMAC ENTER
LEAVE : MACRO
srp #%e0 /* Restore the user register pointer */
iret /* And return from interrupt */
ENDMAC LEAVE
/**************************************************************************
* Code
**************************************************************************/
#if defined(ENCORE_VECTORS)
vector WDT = _z8_wdt_handler
vector TRAP = _z8_trap_handler
# if defined(EZ8_TIMER3)
vector TIMER2 = _z8_timer2_handler
# endif
vector TIMER1 = _z8_timer1_handler
vector TIMER0 = _z8_timer0_handler
# if defined(EZ8_UART0)
vector UART0_RX = _z8_uart0rx_handler
vector UART0_TX = _z8_uart0tx_handler
# endif
# if defined(EZ8_I2C)
vector I2C = _z8_i2c_handler
# endif
# if defined(EZ8_SPI)
vector SPI = _z8_spi_handler
# endif
# if defined(EZ8_ADC)
vector ADC = _z8_adc_handler
# endif
vector P7AD = _z8_p7ad_handler
vector P6AD = _z8_p6ad_handler
vector P5AD = _z8_p5ad_handler
vector P4AD = _z8_p4ad_handler
vector P3AD = _z8_p3ad_handler
vector P2AD = _z8_p2ad_handler
vector P1AD = _z8_p1ad_handler
vector P0AD = _z8_p0ad_handler
# if defined(EZ8_TIMER4)
vector TIMER3 = _z8_timer3_handler
# endif
# if defined(EZ8_UART1)
vector UART1_RX = _z8_uart1rx_handler
vector UART1_TX = _z8_uart1tx_handler
# endif
# if defined(EZ8_DMA)
vector DMA = _z8_dma_handler
# endif
# if !defined(EZ8_PORT1)
vector C3 = _z8_c3_handler
vector C2 = _z8_c2_handler
vector C1 = _z8_c1_handler
vector C0 = _z8_c0_handler
# endif
/**************************************************************************/
#elif defined(ENCORE_XP_VECTORS)
vector WDT = _z8_wdt_handler
vector TRAP = _z8_trap_handler
# if defined(EZ8_TIMER3)
vector TIMER2 = _z8_timer2_handler
# endif
vector TIMER1 = _z8_timer1_handler
vector TIMER0 = _z8_timer0_handler
# if defined(EZ8_UART0)
vector UART0_RX = _z8_uart0rx_handler
vector UART0_TX = _z8_uart0tx_handler
# endif
# if defined(EZ8_I2C)
vector I2C = _z8_i2c_handler
# endif
# if defined(EZ8_SPI)
vector SPI = _z8_spi_handler
# endif
# if defined(EZ8_ADC) || defined(EZ8_ADC_NEW)
vector ADC = _z8_adc_handler
# endif
vector P7AD = _z8_p7ad_handler
vector P6AD = _z8_p6ad_handler
vector P5AD = _z8_p5ad_handler
vector P4AD = _z8_p4ad_handler
vector P3AD = _z8_p3ad_handler
vector P2AD = _z8_p2ad_handler
vector P1AD = _z8_p1ad_handler
vector P0AD = _z8_p0ad_handler
# if defined(EZ8_TIMER4)
vector TIMER3 = _z8_timer3_handler
# endif
# if defined(EZ8_UART1)
vector UART1_RX = _z8_uart1rx_handler
vector UART1_TX = _z8_uart1tx_handler
# endif
# if defined(EZ8_DMA)
vector DMA = _z8_dma_handler
# endif
# if !defined(EZ8_PORT1)
vector C3 = _z8_c3_handler
vector C2 = _z8_c2_handler
vector C1 = _z8_c1_handler
vector C0 = _z8_c0_handler
# endif
vector POTRAP = _z8_potrap_handler
vector WOTRAP = _z8_wotrap_handler
/**************************************************************************/
#elif defined(ENCORE_XP16K_VECTORS)
vector WDT = _z8_wdt_handler
vector TRAP = _z8_trap_handler
# if defined(EZ8_TIMER3)
vector TIMER2 = _z8_timer2_handler
# endif
vector TIMER1 = _z8_timer1_handler
vector TIMER0 = _z8_timer0_handler
# if defined(EZ8_UART0)
vector UART0_RX = _z8_uart0rx_handler
vector UART0_TX = _z8_uart0tx_handler
# endif
# if defined(EZ8_I2C)
vector I2C = _z8_i2c_handler
# endif
# if defined(EZ8_ESPI)
vector SPI = _z8_spi_handler
# endif
# if defined(EZ8_ADC_NEW)
vector ADC = _z8_adc_handler
# endif
vector P7AD = _z8_p7ad_handler
vector P6AD = _z8_p6ad_handler
vector P5AD = _z8_p5ad_handler
vector P4AD = _z8_p4ad_handler
vector P3AD = _z8_p3ad_handler
vector P2AD = _z8_p2ad_handler
vector P1AD = _z8_p1ad_handler
vector P0AD = _z8_p0ad_handler
# if defined(EZ8_MCT)
vector MCT = _z8_mct_handler
# endif
# if defined(EZ8_UART1)
vector UART1_RX = _z8_uart1rx_handler
vector UART1_TX = _z8_uart1tx_handler
# endif
vector C3 = _z8_c3_handler
vector C2 = _z8_c2_handler
vector C1 = _z8_c1_handler
vector C0 = _z8_c0_handler
vector POTRAP = _z8_potrap_handler
vector WOTRAP = _z8_wotrap_handler
/**************************************************************************/
#elif defined(ENCORE_MC_VECTORS)
vector WDT = _z8_wdt_handler
vector TRAP = _z8_trap_handler
vector PWMTIMER = _z8_pwmtimer_handler
vector PWMFAULT = _z8_pwmfault_handler
# if defined(EZ8_ADC_NEW)
vector ADC = _z8_adc_handler
# endif
vector CMP = _z8_cmp_handler
vector TIMER0 = _z8_timer0_handler
# if defined(EZ8_UART0
vector UART0_RX = _z8_uart0rx_handler
vector UART0_TX = _z8_uart0tx_handler
# endif
# if defined(EZ8_SPI)
vector SPI = _z8_spi_handler
# endif
# if defined(EZ8_I2C)
vector I2C = _z8_i2c_handler
# endif
vector C0 = _z8_c0_handler
vector PB = _z8_pb_handler
vector P7A = _z8_p7ap3a_handler
vector P6A = _z8_p6ap2a_handler
vector P5A = _z8_p5ap1a_handler
vector P4A = _z8_p4ap0a_handler
vector POTRAP = _z8_potrap_handler
vector WOTRAP = _z8_wotrap_handler
#endif
/**************************************************************************
* Name: _z16f_*_handler
*
* Description:
* Map individual interrupts into interrupt number and branch to common
* interrupt handling logic. If higher interrupt handling performance
* for particular interrupts is required, then those interrupts should
* be picked off here and handled outside of the common logic.
*
* On entry to any of these handlers, the stack contains the following:
*
* TOS before interrupt
* PC[7:0]
* PC[15:8]
* SP -> Flags Register
*
**************************************************************************/
define startup, space=rom
segment startup
#if defined(ENCORE_VECTORS)
_z8_wdt_handler:
ENTER(Z8_WDT_IRQ)
_z8_trap_handler:
ENTER(Z8_TRAP_IRQ)
# if defined(EZ8_TIMER3)
_z8_timer2_handler:
ENTER(Z8_TIMER2_IRQ)
# endif
_z8_timer1_handler:
ENTER(Z8_TIMER1_IRQ)
_z8_timer0_handler:
ENTER(Z8_TIMER0_IRQ)
# if defined(EZ8_UART0)
_z8_uart0rx_handler:
ENTER(Z8_UART0_RX_IRQ)
_z8_uart0tx_handler:
ENTER(Z8_UART0_TX_IRQ)
# endif
# if defined(EZ8_I2C)
_z8_i2c_handler:
ENTER(Z8_I2C_IRQ)
# endif
# if defined(EZ8_SPI)
_z8_spi_handler:
ENTER(Z8_SPI_IRQ)
# endif
# if defined(EZ8_ADC)
_z8_adc_handler:
ENTER(Z8_ADC_IRQ)
# endif
_z8_p7ad_handler:
ENTER(Z8_P7AD_IRQ)
_z8_p6ad_handler:
ENTER(Z8_P6AD_IRQ)
_z8_p5ad_handler:
ENTER(Z8_P5AD_IRQ)
_z8_p4ad_handler:
ENTER(Z8_P4AD_IRQ)
_z8_p3ad_handler:
ENTER(Z8_P3AD_IRQ)
_z8_p2ad_handler:
ENTER(Z8_P2AD_IRQ)
_z8_p1ad_handler:
ENTER(Z8_P1AD_IRQ)
_z8_p0ad_handler:
ENTER(Z8_P0AD_IRQ)
# if defined(EZ8_TIMER4)
_z8_timer3_handler:
ENTER(Z8_TIMER3_IRQ)
# endif
# if defined(EZ8_UART1)
_z8_uart1rx_handler:
ENTER(Z8_UART1_RX_IRQ)
_z8_uart1tx_handler:
ENTER(Z8_UART1_TX_IRQ)
# endif
# if defined(EZ8_DMA)
_z8_dma_handler:
ENTER(Z8_DMA_IRQ)
# endif
# if !defined(EZ8_PORT1)
_z8_c3_handler:
ENTER(Z8_C3_IRQ)
_z8_c2_handler:
ENTER(Z8_C2_IRQ)
_z8_c1_handler:
ENTER(Z8_C1_IRQ)
_z8_c0_handler:
ENTER(Z8_C0_IRQ)
# endif
/**************************************************************************/
#elif defined(ENCORE_XP_VECTORS)
_z8_wdt_handler:
ENTER(Z8_WDT_IRQ)
_z8_trap_handler:
ENTER(Z8_TRAP_IRQ)
# if defined(EZ8_TIMER3)
_z8_timer2_handler:
ENTER(Z8_TIMER2_IRQ)
# endif
_z8_timer1_handler:
ENTER(Z8_TIMER1_IRQ)
_z8_timer0_handler:
ENTER(Z8_TIMER0_IRQ)
# if defined(EZ8_UART0)
_z8_uart0rx_handler:
ENTER(Z8_UART0_RX_IRQ)
_z8_uart0tx_handler:
ENTER(Z8_UART0_TX_IRQ)
# endif
# if defined(EZ8_I2C)
_z8_i2c_handler:
ENTER(Z8_I2C_IRQ)
# endif
# if defined(EZ8_SPI)
_z8_spi_handler:
ENTER(Z8_SPI_IRQ)
# endif
# if defined(EZ8_ADC) || defined(EZ8_ADC_NEW)
_z8_adc_handler:
ENTER(Z8_ADC_IRQ)
# endif
_z8_p7ad_handler:
ENTER(Z8_P7AD_IRQ)
_z8_p6ad_handler:
ENTER(Z8_P6AD_IRQ)
_z8_p5ad_handler:
ENTER(Z8_P5AD_IRQ)
_z8_p4ad_handler:
ENTER(Z8_P4AD_IRQ)
_z8_p3ad_handler:
ENTER(Z8_P3AD_IRQ)
_z8_p2ad_handler:
ENTER(Z8_P2AD_IRQ)
_z8_p1ad_handler:
ENTER(Z8_P1AD_IRQ)
_z8_p0ad_handler:
ENTER(Z8_P0AD_IRQ)
# if defined(EZ8_TIMER4)
_z8_timer3_handler:
ENTER(Z8_TIMER3_IRQ)
# endif
# if defined(EZ8_UART1)
_z8_uart1rx_handler:
ENTER(Z8_UART1_RX_IRQ)
_z8_uart1tx_handler:
ENTER(Z8_UART1_TX_IRQ)
# endif
# if defined(EZ8_DMA)
_z8_dma_handler:
ENTER(Z8_DMA_IRQ)
# endif
# if !defined(EZ8_PORT1)
_z8_c3_handler:
ENTER(Z8_C3_IRQ)
_z8_c2_handler:
ENTER(Z8_C2_IRQ)
_z8_c1_handler:
ENTER(Z8_C1_IRQ)
_z8_c0_handler:
ENTER(Z8_C0_IRQ)
# endif
_z8_potrap_handler:
ENTER(Z8_POTRAP_IRQ)
_z8_wotrap_handler:
ENTER(Z8_WOTRAP_IRQ)
/**************************************************************************/
#elif defined(ENCORE_XP16K_VECTORS)
_z8_wdt_handler:
ENTER(Z8_WDT_IRQ)
_z8_trap_handler:
ENTER(Z8_TRAP_IRQ)
# if defined(EZ8_TIMER3)
_z8_timer2_handler:
ENTER(Z8_TIMER2_IRQ)
# endif
_z8_timer1_handler:
ENTER(Z8_TIMER1_IRQ)
_z8_timer0_handler:
ENTER(Z8_TIMER0_IRQ)
# if defined(EZ8_UART0)
_z8_uart0rx_handler:
ENTER(Z8_UART0_RX_IRQ)
_z8_uart0tx_handler:
ENTER(Z8_UART0_TX_IRQ)
# endif
# if defined(EZ8_I2C)
_z8_i2c_handler:
ENTER(Z8_I2C_IRQ)
# endif
# if defined(EZ8_ESPI)
_z8_spi_handler:
ENTER(Z8_SPI_IRQ)
# endif
# if defined(EZ8_ADC_NEW)
_z8_adc_handler:
ENTER(Z8_ADC_IRQ)
# endif
_z8_p7ad_handler:
ENTER(Z8_P7AD_IRQ)
_z8_p6ad_handler:
ENTER(Z8_P6AD_IRQ)
_z8_p5ad_handler:
ENTER(Z8_P5AD_IRQ)
_z8_p4ad_handler:
ENTER(Z8_P4AD_IRQ)
_z8_p3ad_handler:
ENTER(Z8_P3AD_IRQ)
_z8_p2ad_handler:
ENTER(Z8_P2AD_IRQ)
_z8_p1ad_handler:
ENTER(Z8_P1AD_IRQ)
_z8_p0ad_handler:
ENTER(Z8_P0AD_IRQ)
# if defined(EZ8_MCT)
_z8_mct_handler:
ENTER(Z8_MCT_IRQ)
# endif
# if defined(EZ8_UART1)
_z8_uart1rx_handler:
ENTER(Z8_UART1_RX_IRQ)
_z8_uart1tx_handler:
ENTER(Z8_UART1_TX_IRQ)
# endif
_z8_c3_handler:
ENTER(Z8_C3_IRQ)
_z8_c2_handler:
ENTER(Z8_C2_IRQ)
_z8_c1_handler:
ENTER(Z8_C1_IRQ)
_z8_c0_handler:
ENTER(Z8_C0_IRQ)
_z8_potrap_handler:
ENTER(Z8_POTRAP_IRQ)
_z8_wotrap_handler:
ENTER(Z8_WOTRAP_IRQ)
/**************************************************************************/
#elif defined(ENCORE_MC_VECTORS)
_z8_wdt_handler:
ENTER(Z8_WDT_IRQ)
_z8_trap_handler:
ENTER(Z8_TRAP_IRQ)
_z8_pwmtimer_handler:
ENTER(Z8_PWMTIMER_IRQ)
_z8_pwmfault_handler:
ENTER(Z8_PWMFAULT_IRQ)
# if defined(EZ8_ADC_NEW)
_z8_adc_handler:
ENTER(Z8_ADC_IRQ)
# endif
_z8_cmp_handler:
ENTER(Z8_CMP_IRQ)
_z8_timer0_handler:
ENTER(Z8_TIMER0_IRQ)
# if defined(EZ8_UART0
_z8_uart0rx_handler:
ENTER(Z8_UART0_RX_IRQ)
_z8_uart0tx_handler:
ENTER(Z8_UART0_TX_IRQ)
# endif
# if defined(EZ8_SPI)
_z8_spi_handler:
ENTER(Z8_SPI_IRQ)
# endif
# if defined(EZ8_I2C)
_z8_i2c_handler:
ENTER(Z8_I2C_IRQ)
# endif
_z8_c0_handler:
ENTER(Z8_C0_IRQ)
_z8_pb_handler:
ENTER(Z8_PB_IRQ)
_z8_p7ap3a_handler:
ENTER(Z8_P7A_IRQ)
_z8_p6ap2a_handler:
ENTER(Z8_P6AP2A_IRQ)
_z8_p5ap1a_handler:
ENTER(Z8_P5AP1A_IRQ)
_z8_p4ap0a_handler:
ENTER(Z8_P4AP0A_IRQ)
_z8_potrap_handler:
ENTER(Z8_POTRAP_IRQ)
_z8_wotrap_handler:
ENTER(Z8_WOTRAP_IRQ)
#endif
/**************************************************************************
* Name: _z16f_common_handler
*
* Description:
* Common IRQ handling logic
*
* On entry, the stack contains the following:
*
* TOS before interrupt
* PC[7:0]
* PC[15:8]
* Flags Register
* SP -> RP
*
* R0 holds the IRQ number and the RP has been reset to %f0
*
**************************************************************************/
_z8_common_handler:
LEAVE
/**************************************************************************
* Data
**************************************************************************/
/* Set aside area for interrupt registers */
define interruptreg, space=rdata, org=%f0
segment interruptreg
ds %10
end _z8_common_handler
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