| Both sides previous revisionPrevious revision | Last revisionBoth sides next revision |
| registers [2021/06/06 13:16] – laubzega | registers [2021/09/08 09:19] – silverdr |
|---|
| | $D032 | <BOOKMARK:DLISTL>DLISTL | 8 | Lo-byte of address from which execution of Display List will start at the beginning of the next frame or after a write to DLSTROBE ($D03E). | | | $D032 | <BOOKMARK:DLISTL>DLISTL | 8 | Lo-byte of address from which execution of Display List will start at the beginning of the next frame or after a write to DLSTROBE ($D03E). | |
| | $D033 | <BOOKMARK:DLISTH>DLISTH | 8 | Hi-byte of address from which execution of Display List will start at the beginning of the next frame or after a write to DLSTROBE ($D03E). | | | $D033 | <BOOKMARK:DLISTH>DLISTH | 8 | Hi-byte of address from which execution of Display List will start at the beginning of the next frame or after a write to DLSTROBE ($D03E). | |
| | $D034 | <BOOKMARK:ADR0L>ADR0L | 8 | Lo-byte of address in VASYL memory to read from or write to| | | $D034 | <BOOKMARK:ADR0L>ADR0L | 8 | Lo-byte of address in VASYL memory to read from or write to using PORT0| |
| | $D035 | <BOOKMARK:ADR0H>ADR0H | 8 | Hi-byte of address in VASYL memory to read from or write to| | | $D035 | <BOOKMARK:ADR0H>ADR0H | 8 | Hi-byte of address in VASYL memory to read from or write to using PORT0| |
| | $D036 | <BOOKMARK:STEP0>STEP0 | 8 | Value in range [-128, 127] added to ADR0(LH) after each access to PORT0 | | | $D036 | <BOOKMARK:STEP0>STEP0 | 8 | Value in range [-128, 127] added to ADR0(LH) after each access to PORT0 | |
| | $D037 | <BOOKMARK:PORT0>PORT0 | 8 | Writing stores a byte at location ADR0(LH) in currently active bank of VASYL memory. \\ Reading returns a byte from that location (provided PORT_READ_ENABLE bit in CTRL1 ($D031) is set to "1"). | | | $D037 | <BOOKMARK:PORT0>PORT0 | 8 | Writing stores a byte at location ADR0(LH) in currently active bank of VASYL memory. \\ Reading returns a byte from that location (provided PORT_READ_ENABLE bit in CTRL1 ($D031) is set to "1"). | |
| | $D038 | <BOOKMARK:ADR1L>ADR1L | 8 | Lo-byte of address in VASYL memory to read from or write to| | | $D038 | <BOOKMARK:ADR1L>ADR1L | 8 | Lo-byte of address in VASYL memory to read from or write to using PORT1| |
| | $D039 | <BOOKMARK:ADR1H>ADR1H | 8 | Hi-byte of address in VASYL memory to read from or write to| | | $D039 | <BOOKMARK:ADR1H>ADR1H | 8 | Hi-byte of address in VASYL memory to read from or write to using PORT1| |
| | $D03A | <BOOKMARK:STEP1>STEP1 | 8 | Value in range [-128, 127] added to ADR1(LH) after each access to PORT1 | | | $D03A | <BOOKMARK:STEP1>STEP1 | 8 | Value in range [-128, 127] added to ADR1(LH) after each access to PORT1 | |
| | $D03B | <BOOKMARK:PORT1>PORT1 | 8 | Writing stores a byte at location ADR1(LH) in currently active bank of VASYL memory. \\ Reading returns a byte from that location (provided PORT_READ_ENABLE bit in CTRL1 ($D031) is set to "1"). | | | $D03B | <BOOKMARK:PORT1>PORT1 | 8 | Writing stores a byte at location ADR1(LH) in currently active bank of VASYL memory. \\ Reading returns a byte from that location (provided PORT_READ_ENABLE bit in CTRL1 ($D031) is set to "1"). | |
