~/wiseowl/reference

Reference

Stable technical reference documents. Memory maps, pinouts, opcode tables, file format specifications, and register descriptions. Designed to be bookmarked and linked to.

Apple II / II+

ThunderClock Plus Installation & Operating Manual

Complete factory manual for the Thunderware ThunderClock Plus real-time clock card. Covers BASIC and assembly language programming, the NEC uPD1990AC serial clock interface, interrupt modes, and the BSR/X-10 home automation interface.

apple-iiretrocomputing

Verified Mar 2026

Videx VideoTerm Installation & Operation Manual

Complete factory manual for the Videx VideoTerm 80-column card. Covers the MC6845 CRTC, firmware listing, memory map, character ROM, auxiliary slot interface, and CP/M integration.

apple-iiretrocomputing

Verified Mar 2026

Apple II / II+ with Microsoft Z-80 SoftCard

CP/M 2.23 Disk-Sector Map

Comprehensive byte-level map of every physical sector in the CP/M 2.23 SoftCard disk image: what bytes are there, what role each sector plays in the boot sequence, and where the bytes end up in Apple memory after the loader runs. The natural capstone reference for the cpm-videx investigation.

apple-iicpm

Verified Apr 2026

Apple II family

Apple II Technical Note Misc #8 — Pascal 1.1 Firmware Protocol ID Bytes

The complete text of the only Apple-published specification for the Pascal 1.1 firmware protocol used to identify Apple II peripheral cards. Includes the canonical $Cn0C device-signature/instance-ID values for all Pascal-1.1-compliant Apple products.

apple-iipascal-firmware

Verified Apr 2026