[SDLSTL], [SDLSTH|SDLSTL] Shadow register of pointer to display list

[DLISTL], [DLISTH|DLISTL] Pointer to display list

[SDMCTL] Direct Memory Access (DMA) Control

[VDSLST] Pointer to Display List Interrupt routine

[NMIEN] to enable the Display List Interrupt

[NMIST], [NMIRES|NMIST] to check the status of [NMIEN]

[WSYNC] halts the CPU until end of scanline

[VCOUNT] Scanline counter

[PENH], [PENV] horizontal and vertical position of the light pen

[LPENH|PENH], [LPENV|PENV] shadow register of [PENH] and [PENV]

[Display List Instruction table|display_list_instruction_table]

[HSCROL], [VSCROL]

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see [topic list], [VBI Vertical Blank Interrupt]