Difference between revisions of "84PCE:Ports:5000"
From WikiTI
(Created page with "5000 Range Unknowns 5000 Range Unknowns 5000 Range Unknowns {|- |<u>Port...") |
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|Bit 2 is set while any key is being pressed | |Bit 2 is set while any key is being pressed | ||
|- | |- | ||
| − | | | + | |5002 |
|00 | |00 | ||
|?? | |?? | ||
| − | |Ports 5002- | + | |''Ports 5002-5003 may always read zero'' |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
|- | |- | ||
|[[:84PCE:Ports:5004|5004]] | |[[:84PCE:Ports:5004|5004]] | ||
| Line 45: | Line 40: | ||
|00 | |00 | ||
| | | | ||
| − | |Ports 5007-500B may always read zero | + | |''Ports 5007-500B may always read zero'' |
| + | |- | ||
| + | |[[:84PCE:Ports:500C|500C]] | ||
| + | |19 | ||
| + | |FF | ||
| + | |Reset bit 4 to freeze | ||
| + | |- | ||
| + | |[[:84PCE:Ports:500D|500D]] | ||
| + | |00 | ||
| + | |FF | ||
| + | |Latches value written | ||
| + | |- | ||
| + | |[[:84PCE:Ports:500E|500E]] | ||
| + | |00 | ||
| + | |3F | ||
| + | |Latches value written | ||
| + | |- | ||
| + | |500F | ||
| + | |00 | ||
| + | | | ||
| + | |''Port 500F may always read zero'' | ||
|- | |- | ||
|} | |} | ||
Revision as of 19:17, 27 March 2015
| Port | Default | Bits | Information |
| 5000 | 00 | ?? | May or may not serve a purpose? |
| 5001 | 80 | ?? | Bit 2 is set while any key is being pressed |
| 5002 | 00 | ?? | Ports 5002-5003 may always read zero |
| 5004 | 11 | FF | Reset bit 4 to freeze |
| 5005 | 30 | FF | Setting bit 2 or bit 7 (or both) will freeze the calculator |
| 5006 | 00 | 3F | Latches value written |
| 5007 | 00 | Ports 5007-500B may always read zero | |
| 500C | 19 | FF | Reset bit 4 to freeze |
| 500D | 00 | FF | Latches value written |
| 500E | 00 | 3F | Latches value written |
| 500F | 00 | Port 500F may always read zero |
