Use the LEDs - Revision history

1BitFeverDreams: /* LED availability */ clarification on which machine have RGB LEDs

2025-02-15T12:25:25Z

LED availability: clarification on which machine have RGB LEDs

← Older revision		Revision as of 08:25, 15 February 2025
Line 17:		Line 17:
	\|yes		\|yes
	\|yes		\|yes
	\|yes		\|yes, RGB
	\|yes		\|yes, RGB
	\|-		\|-
	\|L0 status		\|L0 status
Line 35:		Line 35:
	\|yes		\|yes
	\|yes		\|yes
	\|yes		\|yes, RGB
	\|yes		\|yes, RGB
	\|-		\|-
	\|Caps Lock		\|Caps Lock
	\|no		\|no
	\|no		\|no
	\|yes		\|yes, RGB
	\|yes		\|yes, RGB
	\|-		\|-
	\|Network		\|Network
Line 48:		Line 48:
	\|no		\|no
	\|no		\|no
	\|yes		\|yes, RGB
	\|}		\|}

Line 140:		Line 140:
	\|}		\|}

	=== LED Color Registers ===		=== LED Color Registers on the K and K2 ===

	Set these RGB byte values for every LED other than L0 and L1. Note that these registers are Write only. The color will only change if you assumed manual control of these LEDs using the corresponding SYS0 system control register bits above.		Set these RGB byte values for every LED other than L0 and L1. Note that these registers are Write only. The color will only change if you assumed manual control of these LEDs using the corresponding SYS0 system control register bits above.
Line 166:		Line 166:
	\|0xD6AF		\|0xD6AF
	\|-		\|-
	\|Network		\|Network (K2 only)
	\|0xD6B3		\|0xD6B3
	\|0xD6B4		\|0xD6B4
	\|0xD6B5		\|0xD6B5
	\|}		\|}

1BitFeverDreams: /* LED Color Registers */ clarification on the color RGB registers

2025-02-06T04:15:00Z

LED Color Registers: clarification on the color RGB registers

← Older revision		Revision as of 00:15, 6 February 2025
Line 142:		Line 142:
	=== LED Color Registers ===		=== LED Color Registers ===

	Set these RGB byte values for every LED other than L0 and L1. Note that these registers are Write only.		Set these RGB byte values for every LED other than L0 and L1. Note that these registers are Write only. The color will only change if you assumed manual control of these LEDs using the corresponding SYS0 system control register bits above.

	{\| class="wikitable"		{\| class="wikitable"

1BitFeverDreams: first version of the LED guide

2025-02-06T03:53:31Z

first version of the LED guide

New page

== How to Use the LEDs ==

=== LED availability ===

Here's a chart for the availability of the LEDs for the 4 machines

{| class="wikitable"
|+
!LED Name
!F256 Jr.
!F256 Jr.2
!F256K
!F256K2
|-
|Power
|yes
|yes
|yes
|yes
|-
|L0 status
|yes
|yes
|yes
|yes
|-
|L1 status
|yes
|yes
|yes
|yes
|-
|SD Card Access
|yes
|yes
|yes
|yes
|-
|Caps Lock
|no
|no
|yes
|yes
|-
|Network
|no
|no
|no
|yes
|}

L0 and L1 are status LED on the board itself. (to do: state their normal purpose in this page)

=== System Control Register 0 at 0xD6A0 ===

Here's the register that can let you assume manual control for the LEDs. In order to take control of a given LED, set the appropriate bit to 1.

{| class="wikitable"
|+
!Address
!R/W
!Name
!7
!6
!5
!4
!3
!2
!1
!0
|-
|0xD6A0
|W
|SYS0
|RESET
|NETW_LED
|CAPLOCKS_LED
|BUZZ
|L1_LED
|L0_LED
|SD_LED
|PWR_LED
|}

=== System Control Register 1 at 0xD6A1 ===

This register can control the behavior of the onboard L0 and L1 LEDs

{| class="wikitable"
|+
!Address
!R/W
!Name
!7
!6
!5
!4
!3
!2
!1
!0
|-
|0xD6A1
|W
|SYS1
|L1_RATE1
|L1_RATE0
|L0_RATE1
|L0_RATE0
|SID_ST
|PSG_ST
|L1_MN
|L0_MN
|}

If L1_MN, L0_MN are set, they are under manual control. This allows to manually turn them on or off using the SYS0 register at 0xD6A0. If they are cleared, they will flash according to the L1_RATE and L0_RATE settings.

{| class="wikitable"
|+
!RATE1
!RATE0
!Rate
|-
|0
|0
|1s
|-
|0
|1
|0.5s
|-
|1
|0
|0.4s
|-
|1
|1
|0.2s
|}

=== LED Color Registers ===

Set these RGB byte values for every LED other than L0 and L1. Note that these registers are Write only.

{| class="wikitable"
|+
!LED Name
!Red register
!Green register
!Blue register
|-
|Power
|0xD6A7
|0xD6A8
|0xD6A9
|-
|SD Access
|0xD6AA
|0xD6AB
|0xD6AC
|-
|Caps Lock
|0xD6AD
|0xD6AE
|0xD6AF
|-
|Network
|0xD6B3
|0xD6B4
|0xD6B5
|}