OSWORD &51

OSWORD &51 (81 ) - Get maximum heap block size DVR

XY is a heap handle.
On exit:
 XY+0..1=size of the largest block available.
 If the call failed, XY are preserved, C is set,
 and XY+0..1 is set to zero.

OSWORD &51 (81 ) - Write Real-Time clock CDFS

On entry:
 XY?0 = seconds 0-59
 XY?1 = minutes 0-59
 XY?2 = hours 0-23
 XY?3 = day of week 1-7, 1=Sunday
 XY?4 = date of month 1-31
 XY?5 = month 1-12
 XY?6 = year 00-99

OSWORD &51 (81 ) - HKSET Support SEHK

On entry:
 XY?0=reason code
 1 - read the news line
 2 - read a chinese character definition
 3 - get bytes from a page in remote memory
 4 - test remote hardware
 5 - print stock page to screen or printer
 6 - get new stock/teletext page (slow)
 7 - get new stock/teletext page (fast)
 8 - enter HKSET in I/O processor

See Also

• http://mdfs.net/Docs/Comp/BBC/Oswords

Jgharston 13:42, 26 May 2009 (UTC)