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pmax/kn230.h: fix typos and spacing in comments

This commit is contained in:
rillig 2024-05-24 19:00:27 +00:00
parent 98af55aed4
commit 8e4fd6997e
1 changed files with 12 additions and 12 deletions
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sys/arch/pmax/pmax/kn230.h
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@ -1,4 +1,4 @@
/* $NetBSD: kn230.h,v 1.4 2024/05/23 08:52:06 andvar Exp $ */
/* $NetBSD: kn230.h,v 1.5 2024/05/24 19:00:27 rillig Exp $ */
/*
* Copyright (c) 1997,1998 Jonathan Stone.
@ -35,17 +35,17 @@
/*
* Physical addresses of baseboard devices and registers on the
* the DECstation 5100 motherboard (also known as the kn230).
* DECstation 5100 motherboard (also known as the kn230).
*
* The only options on the kn230 are two slots for daughterboards.
* Each slot can contain an extra four-port dc708x DZ11 clone chip.
* Most baseborad chips are the same hardware and at the same
* address as the DECstation 3100 (kn01), except:
* Most baseboard chips are the same hardware and at the same
* address as the DECstation 3100 (kn01), except:
*
* The kn230 has more devices than the 3100, so instead
* of hardwiring each device to a CPU interrupt line,
* the kn230 provides an interrupt-request register (ICSR).
* Devices are mapped onto CPU interrupt lines as below:
* the kn230 provides an interrupt-request register (ICSR).
* Devices are mapped onto CPU interrupt lines as below:
* hardint 5: fpu
* hardint 4: reset switch
* hardint 3: memory error (write to nonexistent memory)
@ -75,7 +75,7 @@
/*
* Interrupt-request bitmasks in the low-order 16 bits of the CSR.
* If a bit is set, the corresponding device has an interrupt condition.
* If a bit is set, the corresponding device has an interrupt condition.
* There is no equivalent per-device interrupt masking register.
* (note: these were LED control bits in the kn01).
*/
@ -88,7 +88,7 @@
#define KN230_CSR_INTR_DZ0 0x00000100 /* baseboard DZ */
/*
* kn230 LED control register.
* kn230 LED control register.
* Writing a 1 bit to any bit turns off the corresponding LED.
* low bits are or'ed to control registers which have side effects.
*
@ -156,7 +156,7 @@
/*
* NVRAM state definitions.
* Used under Ultrix for PrestoServe.
* Used under Ultrix for PrestoServe.
*/
#define KN230_SYS_NVRAM_DIAG 0x1f000300 /* NVRAM diagnostic register */
#define KN230_NVRAM_PRESENT 0x00000001
@ -169,7 +169,7 @@
/*
* NVRAM has separate control and status registers for each of
* the two motherboard SIMM banks (even and odd),
* located at offsets from the value at value at SYS_NVRAM_ADDR.
* located at offsets from the value at SYS_NVRAM_ADDR.
*/
# define KN230_SYS_NVRAM_EVENBNK_STATUS_OFFSET (0x200000)
# define KN230_SYS_NVRAM_ODDBNK_STATUS_OFFSET (0x200000 +4)
@ -180,8 +180,8 @@
#define KN230_NVRAM_BATFAIL 0x00000001 /* battery failure */
#define KN230_NVRAM_BATKILL 0x00000002 /* battery kill */
/*
* To enable the battery, write 0x00 to each nvram control reg.
* To enable the battery, write 0x00 to each nvram control reg.
* To disable the battery, write the sequence
* 0x01, 0x01, 0x00, 0x00, 0x01
* 0x01, 0x01, 0x00, 0x00, 0x01
* to both per-bank control registers (do banks in parallel, not in sequence).
*/