DS17485

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Provided by: DS17485
Class Hierarchy: conf-object → log-object → DS17485
Interfaces Implemented: log_object, event_poster, io_memory
Description: The DS17485 device implements real time clock functionality and non-volatile storage (NVRAM). The device is often referred to as CMOS Clock. The DS17485 include time-of-day alarm, both 12 and 24 hour time format, periodic interrupts and 114 bytes + 4 kbytes of general purpose RAM. Limitations: Alarm interrupt not implemented. Daylight Savings Time not implemented.

Attributes inherited from class conf-object

attributes, classname, component, iface, name, object_id, queue

Attributes inherited from class log-object

access_count, log_buffer, log_buffer_last, log_buffer_size, log_group_mask, log_groups, log_level, log_type_mask

Attribute List

extended_ram: Optional attribute; read/write access; type: Data.
The contents of the (4 * 1024) bytes of extended RAM.

hour: Pseudo attribute; read/write access; type: Integer.
Current hour [0,23].

interrupt_pin: Optional attribute; read/write access; type: Integer.
Status of the interrupt pin.

irq_dev: Required attribute; read/write access; type: Object.
Device to send interrupts to, implementing the simple-interrupt.

irq_level: Required attribute; read/write access; type: Integer.
Level at which interrupts are sent.

last_pie: Optional attribute; read/write access; type: Float.
Time of last PIE interrupt in simulator time.

mday: Pseudo attribute; read/write access; type: Integer.
Current day of the month [1,31].

minute: Pseudo attribute; read/write access; type: Integer.
Current minute [0,59].

month: Pseudo attribute; read/write access; type: Integer.
Current month [1,12].

next_addr: Optional attribute; read/write access; type: Integer.
Next NVRAM address to be accessed.

nvram: Optional attribute; read/write access; type: [i{128}]; integer indexed; indexed type: Integer; persistent attribute.
The contents of the non-volatile storage, as a list of 128 bytes.

nvram_bank1: Optional attribute; read/write access; type: [i{64}]; integer indexed; indexed type: unknown type; persistent attribute.
The contents of the non-volatile storage in bank1, as a list of 64 bytes.

period_in_us: Pseudo attribute; read-only access; type: [i{16}].
Time between periodic interrupts, in microseconds

second: Pseudo attribute; read/write access; type: Integer.
Current second [0,59].

seconds_last: Optional attribute; read/write access; type: Integer; persistent attribute.
Current time-of-day, counted in seconds.

time_last: Optional attribute; read/write access; type: Float.
Simulated time in seconds at last update.

time_regs_changed: Optional attribute; read/write access; type: Integer.
Set to 1 if time register were modified while SET = 1.

year: Pseudo attribute; read/write access; type: Integer.
Current year (full four-digit format).

Commands defined by interface log_object

log, log-group, log-level, log-size, log-type

Commands

cmos-base-mem	deprecated — set base memory size
cmos-boot-dev	deprecated — set boot drive
cmos-century	deprecated — set date century
cmos-extended-mem	deprecated — set extended memory size
cmos-floppy	deprecated — set floppy parameters
cmos-hd	deprecated — set fixed disk parameters
cmos-info	deprecated — print information about the CMOS area
cmos-init	deprecated — initialize some CMOS values
get-date-time	get date and time
info	print information about the device
set-date-time	set date and time
status	print status of the device
trace-nvram	trace nvram updates

<DS17485>.cmos-base-mem — deprecated
Synopsis: <DS17485>.cmos-base-mem kilobytes
Description: This command is deprecated, use <x86-system>.cmos-base-mem instead.

<DS17485>.cmos-boot-dev — deprecated
Synopsis: <DS17485>.cmos-boot-dev "drive"
Description: This command is deprecated, use <x86-system>.cmos-boot-dev instead.

<DS17485>.cmos-century — deprecated
Synopsis: <DS17485>.cmos-century century
Description: This command is deprecated, use <DS17485>.set-date-time instead.

<DS17485>.cmos-extended-mem — deprecated
Synopsis: <DS17485>.cmos-extended-mem megabytes
Description: This command is deprecated, use <x86-system>.cmos-extended-mem instead.

<DS17485>.cmos-floppy — deprecated
Synopsis: <DS17485>.cmos-floppy "drive" "type"
Description: This command is deprecated, use <x86-system>.cmos-floppy instead.

<DS17485>.cmos-hd — deprecated
Synopsis: <DS17485>.cmos-hd "drive" cylinders heads sectors_per_track
Description: This command is deprecated, use <x86-system>.cmos-hd instead.

<DS17485>.cmos-info — deprecated
Synopsis: <DS17485>.cmos-info
Description: This command is deprecated, use <x86-system>.cmos-info instead.

<DS17485>.cmos-init — deprecated
Synopsis: <DS17485>.cmos-init
Description: This command is deprecated, use <x86-system>.cmos-init instead.

<DS17485>.info
Synopsis: <DS17485>.info
Description: Print detailed information about the configuration of the device.

<DS17485>.set-date-time
Synopsis: <DS17485>.set-date-time year month mday hour minute second [-binary] [-bcd]
Description: Set the date and time of the real-time clock. Both month and mday start counting at one, the other at zero. Year should be in the full four-digit format. The cmos-init command must be issued before this command, unless the simulation was started from a checkpoint. The -binary and -bcd flags can be used to specify the format of the register values. Default is to use BCD, but some systems use a binary format without checking the binary/BCD status bit in register B.

<DS17485>.status
Synopsis: <DS17485>.status
Description: Print detailed information about the current status of the device.

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