h6. [[Programmer's Reference Manuals]] h6(. » [[Service Calls|Part 16 – Service Calls]] h6((. » [[Service_MonitorLeadTranslation]] h6(((. » Monitor Lead IDs h2. Monitor Lead IDs The monitor lead ID is an 8-bit value which is split into four 2-bit fields. |_<^{width:4em}. Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |_<^. Field |\2. ID3 |\2. ID2 |\2. ID1 |\2. ID0 | The subfields correspond to the 4 ID pins that are present in the monitor lead. The value of each field indicates what that pin is connected to. |_<^{width:4em}. Value |_<^. Pin tied to | |<^. 0 |<^. 0v| |<^. 1 |<^. +5v| |<^. 2 |<^. Hsync| |<^. 3 |<^. Indeterminate| h4. Notes The version of the portable module used in the A4 recognises that 1,1,1,1 occurs when no lead is connected, and sets mode 27, type 5, sync 0. If [[Service_MonitorLeadTranslation]] is unclaimed RISC OS recognises the following values: |_<^{width:4em}. ID0|_<^{width:4em}. ID1|_<^{width:4em}. ID2|_<^{width:4em}. ID3[1]|_<^{width:8em}. Type|_<^{width:8em}. Sync|_<^. Mode| |<^. H |<^. +5v |<^. +5v |<^. n/a|<^. 0 - TV |<^. Composite |<^. 12 | |<^. +5v |<^. +5v |<^. H |<^. n/a|<^. 1 - Multisync |<^. Composite |<^. 27 | |<^. +5v |<^. 0v |<^. +5v |<^. n/a|<^. 3 - Mono VGA |<^. Separate |<^. 27 | |<^. 0v |<^. +5v |<^. +5v |<^. n/a|<^. 3 - Colour VGA |<^. Separate |<^. 27 | |<^. 0v |<^. +5v |<^. 0v |<^. n/a|<^. 4 - SVGA |<^. Separate |<^. 27 | fn1. Value of ID3 is not used If even this fails, RISC OS assumes type 0 - TV standard. h4. See also * [[Monitor Types]] * [[Service Calls]] * [[Service_MonitorLeadTranslation]] [link3]Monitor+Lead+IDs [link4]Monitor+Types