Click4

Click4 interface

Click4 (pronounced click-ah) is a fantasy console based around nibbles.

Capabilities

• Program memory: 64x64 nibbles (2,048 bytes)
• RAM: Shared with Program memory
• Screen: 64x64, 16 colors
• Instruction set: 16 instructions
• Sounds: Sound queue with 16 sounds (A-G#, plus a rest and three other noises)

Instructions

Value	Color	Op	Args	ShortInfo	Sound
0		NOP	0	nop	Rest
1		SET	2	*ARG1=ARG2	A
2		COPY	2	*ARG1=*ARG2	A#
3		INC	1	*ARG1=*ARG1+1	B
4		DEC	1	*ARG1=*ARG1-1	C
5		NAND	3	*ARG1=*ARG2&*ARG3	C#
6		CRSZ	1	*ARG==0?PC=PC+2	D
7		JMP	4	PC=X[*ARG1*16+*ARG2]+Y[*ARG3*16+*ARG4]	D#
8		RJMP	1	PC=PC+ARG1+1	E
9		LOAD	0	R0=X[R*16+R2]+Y[R3*16+R4]	F
10		SAVE	0	X[R*16+R2]+Y[R3*16+R4]=R0	F#
11		INPUT	1	*ARG1=INPUT	G
12		DRAW	0	Draw X[R0*16+R1],Y[R2*16+R3] with W[R4],H[R5] to X[R6*16+R7],Y[R8*16+R9	G#
13		QSND	1	enqueue_sound(*ARG1)	Alt1
14		N/A	0	n/a	Alt2
15		N/A	0	n/a	Alt3

Controls

To begin or stop execution, press Tab.

To show console information, Press R.

To access primary functions or change a value in memory, click on the 64x64 grid. A context menu containing the following will appear:

• 0-15: Change the selected memory value.
• X,Y PC: The current X, Y location and the raw index.
• Save: Save the current program to cart.png
• Load: Load the current program from cart.png
• Reset: Clear the entire cart in memory.
• Show: Show the file location of cart.png

To change the scale of the console, Press - or +.

To close the context menu, press Escape.

Links

• Itch.io page
• GitHub repo
• Documentation