Files
SVM/FLAGS.md
Sam Stevens 1efb9d69b5 Implemeted Flag support and flag CONSTS.
Implmeneted ALIAS assembler instruction, JBC & JBS instructions.
2017-12-23 17:26:35 +00:00

1.3 KiB

Flags

Locations shown below are relative to the start of flags, typically 0xFF00.

Bits marked N/A read as zero and writing values will not have an effect.

Console

Status | CONSTS | 0x00

8 7 6 5 4 3 2 1
Read/Write R R/W R/W R
**Default ** X 1 1 X
Name N/A N/A N/A N/A ReadAvailable ReadBlock Enabled Available

Cursor X | CONPOSX | 0x01

  • 8-bit unsigned number
  • Read/Write

Cursor Y | CONPOSY | 0x02

  • 8-bit unsigned number
  • Read/Write

Width | CONX | 0x03

  • 8-bit unsigned number
  • Read/Write

Height | CONY | 0x04

  • 8-bit unsigned number
  • Read/Write

ALU

Flags here for logic/math results

Tape

Tape control and status

Traps

Trap status and settings