MediaWiki:Sitenotice:
2025-12-29: I have restored the wiki to a backup from the end of November. Starting in September 2025, accesses went form the 800MB-1.2GB range per month to 26GB in September, 42GB in October, and 70GB in November with most accesses originating from China. As soon as I realized what was causing all the access problems in November, I shut it down (it had reached 36GB by then) behind a password/login screen. The database had gotten corrupted, and I tried a restore from just before the spike in access but that didn't work. Thus, end of November. I still have the other daily backups so if there were any important additions in December, let me know and maybe they can be recovered. - Allen H.
Deluxe RS-232 Program Pak
Copy of Sock Master's
The heart of the Deluxe RS-232 Pak is the Synertek 6551 ACIA. It has an on-chip baud rate generator, programmable interrupts and status register for ease of operation, false start bit detection, and echo mode
This ACIA board is memory mapped to addresses $FF68 (65384) to $FF6B (65387).
The 6551 uses 4 memory addresses for the following functions:
| Address | Write | Read |
|---|---|---|
| FF68 | Transmit data Register | Received data Register |
| FF69 | Soft Reset | Status Register |
| FF6A | Command Register | |
| FF6B | Control Register |