Difference between revisions of "OSWORD &99"
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XY?0 =inward control block size | XY?0 =inward control block size | ||
XY?1 =returned control block size | XY?1 =returned control block size | ||
| − | XY?2 = | + | XY?2 =request code, or &00 for ROM presence check |
| − | XY?3 = | + | XY?3 =&00 |
| − | XY! | + | XY?4 =&00 |
| + | XY?5 =&00 | ||
| + | XY!6 =address of request payload | ||
| + | XY!10 =size of request payload | ||
| + | XY!14 =address for response payload | ||
| + | XY!18 =max size of response payload | ||
On exit: | On exit: | ||
| − | XY? | + | XY?3 =response code (never &00), or &FF on error |
| − | XY? | + | XY?5 =FS ID of BeebLink ROM that handled the request |
| − | XY! | + | XY!18 =total size of response payload |
| + | |||
| + | Addresses are 32-bit addresses, same as [[OSFILE]] and so on. | ||
| + | |||
| + | If the response payload total size is greater than the max size, the payload was truncated. (In this case, the max number of bytes were stored, but the rest were discarded.) | ||
| + | |||
| + | Latest docs for this call can be found on GitHub: https://github.com/tom-seddon/beeblink/blob/master/docs/tech.md#new-osword-call | ||
Revision as of 21:55, 18 August 2023
OSWORD &99 (153) Perform BeebLink request
On entry: XY?0 =inward control block size XY?1 =returned control block size XY?2 =request code, or &00 for ROM presence check XY?3 =&00 XY?4 =&00 XY?5 =&00 XY!6 =address of request payload XY!10 =size of request payload XY!14 =address for response payload XY!18 =max size of response payload On exit: XY?3 =response code (never &00), or &FF on error XY?5 =FS ID of BeebLink ROM that handled the request XY!18 =total size of response payload
Addresses are 32-bit addresses, same as OSFILE and so on.
If the response payload total size is greater than the max size, the payload was truncated. (In this case, the max number of bytes were stored, but the rest were discarded.)
Latest docs for this call can be found on GitHub: https://github.com/tom-seddon/beeblink/blob/master/docs/tech.md#new-osword-call
