General-Purpose Bus Controller
13-12 Élan™SC520 Microcontroller User’s Manual
Table 13-4 Cross-Reference Table of ISA Signals and GP Bus Signals
1
Notes
1. This table does not imply that the ÉlanSC520 microcontroller is fully
compliant with all ISA timing specifications. See the Élan™SC520 Mi-
crocontroller Data Sheet, order #22003, for information on the GP bus
and GP-DMA timing supported by the ÉlanSC520 microcontroller.
ISA Signal Name GP Bus Signal Name
AEN GPAEN
BALE GPALE
BCLK (Not Supported)
DACK
GPDACK
DRQ GPDRQ
IOCHK
Supported through GPIRQ
IOCHRDY GPRDY
IOCS16
GPIOCS16
IOR GPIORD
IOW GPIOWR
IRQ GPIRQ
LA23–LA17 GPA23–GPA17
MASTER
(Not Supported)
MEMCS16
GPMEMCS16
MEMR GPMEMRD
MEMW GPMEMWR
OSC (Not Supported)
REFRESH
(Not Supported)
RSTDRV GPRESET
SA19–SA0 GPA19–GPA0
SBHE
GPBHE
SD15–SD0 GPD15–GPD0
TC GPTC
(Not Supported) GPA25–GPA24