Class Chip8IS

constructor

• new Chip8IS(cpu): Chip8IS

• Parameters

  • cpu: Chip8

  Returns Chip8IS

cpu

ADD_I_Vx

• ADD_I_Vx(x): void

• Code FX1E

  Parameters

  • x: number

  Returns void

ADD_Vx_Vy

• ADD_Vx_Vy(x, y): void

• Code 8XY4 Adds VY to VX. VF is set to 1 when there's a carry, and to 0 when there is not.

  Parameters

  • x: number

  • y: number

  Returns void

ADD_Vx_nn

• ADD_Vx_nn(x, nn): void

• Code 7XNN Adds NN to VX (carry flag is not changed).

  Parameters

  • x: number

  • nn: number

  Returns void

AND_Vx_Vy

• AND_Vx_Vy(x, y): void

• Code 8XY2 Sets VX to VX and VY. (bitwise AND operation)

  Parameters

  • x: number

  • y: number

  Returns void

CALL_nnn

• CALL_nnn(nnn): void

• Code 2NNN

  Parameters

  • nnn: number

  Returns void

CLS

• CLS(): void

• Code 00E0 Clears the screen

  Returns void

DRW_Vx_Vy_n

• DRW_Vx_Vy_n(x, y, n): void

• Code DXYN

  Parameters

  • x: number

  • y: number

  • n: number

  Returns void

JP_V0_nnn

• JP_V0_nnn(nnn): void

• Code BNNN

  Parameters

  • nnn: number

  Returns void

JP_nnn

• JP_nnn(nnn): void

• Code 1NNN Jumps to address NNN.

  Parameters

  • nnn: number

  Returns void

LD_B_Vx

• LD_B_Vx(x): void

• Code FX33

  Parameters

  • x: number

  Returns void

LD_DT_Vx

• LD_DT_Vx(x): void

• Code FX15

  Parameters

  • x: number

  Returns void

LD_F_Vx

• LD_F_Vx(x): void

• Code FX29

  Parameters

  • x: number

  Returns void

LD_I_Vx

• LD_I_Vx(x): void

• Code FX55

  Parameters

  • x: number

  Returns void

LD_I_nnn

• LD_I_nnn(nnn): void

• Code ANNN

  Parameters

  • nnn: number

  Returns void

LD_ST_Vx

• LD_ST_Vx(x): void

• Code FX18

  Parameters

  • x: number

  Returns void

LD_Vx_DT

• LD_Vx_DT(x): void

• Code FX07

  Parameters

  • x: number

  Returns void

LD_Vx_I

• LD_Vx_I(x): void

• Code FX65

  Parameters

  • x: number

  Returns void

LD_Vx_K

• LD_Vx_K(x): void

• Code FX0A

  Parameters

  • x: number

  Returns void

LD_Vx_Vy

• LD_Vx_Vy(x, y): void

• Code 8XY0 Sets VX to the value of VY.

  Parameters

  • x: number

  • y: number

  Returns void

LD_Vx_nn

• LD_Vx_nn(x, nn): void

• Code 6XNN Sets VX to NN.

  Parameters

  • x: number

  • nn: number

  Returns void

OR_Vx_Vy

• OR_Vx_Vy(x, y): void

• Code 8XY1 Sets VX to VX or VY. (bitwise OR operation)

  Parameters

  • x: number

  • y: number

  Returns void

RET

• RET(): void

• Code 00EE Returns from a subroutine.

  Returns void

RND_Vx_nn

• RND_Vx_nn(x, nn): void

• Code CXNN

  Parameters

  • x: number

  • nn: number

  Returns void

SE_Vx_Vy

• SE_Vx_Vy(x, y): void

• Code 5XY0

  Parameters

  • x: number

  • y: number

  Returns void

SE_Vx_nn

• SE_Vx_nn(x, nn): void

• Code 3XNN

  Parameters

  • x: number

  • nn: number

  Returns void

SHL_Vx_Vy

• SHL_Vx_Vy(x, y): void

• Code 8XYE Stores the most significant bit of VX in VF and then shifts VX to the left by 1.

  Parameters

  • x: number

  • y: number

  Returns void

SHR_Vx_Vy

• SHR_Vx_Vy(x, y): void

• Code 8XY6 Stores the least significant bit of VX in VF and then shifts VX to the right by 1.

  Parameters

  • x: number

  • y: number

  Returns void

SKNP_Vx

• SKNP_Vx(x): void

• Code EXA1

  Parameters

  • x: number

  Returns void

SKP_Vx

• SKP_Vx(x): void

• Code EX9E

  Parameters

  • x: number

  Returns void

SNE_Vx_Vy

• SNE_Vx_Vy(x, y): void

• Code 9XY0

  Parameters

  • x: number

  • y: number

  Returns void

SNE_Vx_nn

• SNE_Vx_nn(x, nn): void

• Code 4XNN

  Parameters

  • x: number

  • nn: number

  Returns void

SUBN_Vx_Vy

• SUBN_Vx_Vy(x, y): void

• Code 8XY7 Sets VX to VY minus VX. VF is set to 0 when there's a borrow, and 1 when there is not.

  Parameters

  • x: number

  • y: number

  Returns void

SUB_Vx_Vy

• SUB_Vx_Vy(x, y): void

• Code 8XY5 VY is subtracted from VX. VF is set to 0 when there's a borrow, and 1 when there is not.

  Parameters

  • x: number

  • y: number

  Returns void

SYS

• SYS(): void

• Code 0NNN Calls machine code routine (RCA 1802 for COSMAC VIP) at address NNN. Not necessary for most ROMs.

  Returns void

XOR_Vx_Vy

• XOR_Vx_Vy(x, y): void

• Code 8XY3 Sets VX to VX xor VY.

  Parameters

  • x: number

  • y: number

  Returns void

togglePixel

• togglePixel(x, y): boolean

• Toggle screen pixel

  Parameters

  • x: number

  • y: number

  Returns boolean