Difference between revisions of "OSBYTE &6E"
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| − | OSBYTE &6E (110) - Early Watford DFS double-step control | + | ===OSBYTE &6E (110) - Write to ROMSTROBE=== |
| + | |||
| + | On entry: | ||
| + | X= new ROMSTROBE value | ||
| + | On exit: | ||
| + | X= old ROMSTROBE value | ||
| + | |||
| + | The value passed in X is written to the ROMSTROBE port and the RAM copy, the | ||
| + | old value of the RAM copy is returned. Implemented in the Electron Plus 1 | ||
| + | Support ROM. The ROMSTROBE port is at &FC73 on the Electron, and writes | ||
| + | the byte of data while the ROMSTROBE line is activated on the cartridge | ||
| + | slot. | ||
| + | |||
| + | |||
| + | ===OSBYTE &6E (110) - Early Watford DFS double-step control=== | ||
Do not use - use *OPT40,n and *OPT80,n.<ref>''The Micro User'', August 1986, p.22.</ref> | Do not use - use *OPT40,n and *OPT80,n.<ref>''The Micro User'', August 1986, p.22.</ref> | ||
Latest revision as of 00:37, 15 February 2016
Contents
OSBYTE &6E (110) - Write to ROMSTROBE
On entry: X= new ROMSTROBE value On exit: X= old ROMSTROBE value
The value passed in X is written to the ROMSTROBE port and the RAM copy, the old value of the RAM copy is returned. Implemented in the Electron Plus 1 Support ROM. The ROMSTROBE port is at &FC73 on the Electron, and writes the byte of data while the ROMSTROBE line is activated on the cartridge slot.
OSBYTE &6E (110) - Early Watford DFS double-step control
Do not use - use *OPT40,n and *OPT80,n.[1]
See Also
References
- ↑ The Micro User, August 1986, p.22.
Jgharston 21:17, 26 May 2009 (UTC)
