=> R0 = 19/20 (reason code)
R1 = module number, or 0 to start
R2 = ROM section
<= R0 preserved
R1 = module number of found module +1
R2 = ROM section of found module
R3 = pointer to module name
R4 = -1 unplugged
0 inserted but not in the module chain
1 active
2 running
R5 = chunk number of expansion card module
R6 = BCD version number for OS_Module 20
This call returns information on one module that is currently in ROM along with its status. The module found is the given number of modules on from start of the given ROM section. If there are insufficient modules in the ROM section then the search continues with the next section; so the fifth module in a four module section would in fact be the first module of the next section. The ROM sections are scanned in this order. The values in R0-R2 are the correct ones to use this call to enumerate the next module; hence repeated calls will give a full enumeration of all ROM modules.
BCD version number
The top 16 bits contain the integer part of the version number, the botton 16 bits the fractional part.
(e.g. If version = 2.12 then BCD = &00021200)
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