MG's Apple II Site

Apple II CP/M Hardware and OSes - [Slot-Based (][+, //e, IIgs)]

M.G. — 2023-06-16T02:06:49-04:00

Apple II CP/M Hardware and OSes Hardware Apple CP/M hardware comes in two major types: Softcard The Softcard-style cards all use the Microsoft Softcard mechanism of suspending the 6502 via the DMA line and taking over the bus. The Z80 has direct access to the Apple II hardware.

Apple II I/O Page - [Address List] clarify KBD

M.G. — 2022-08-01T18:37:02-04:00

O = Apple II+, E = Apple IIe, C = Apple IIc and IIc Plus, P = Apple IIc Plus Only, G = Apple IIgs, M = IIe PDS Card Only

MG's Hardware Probing Guide - [How to Probe for Hardware]

M.G. — 2021-10-30T23:38:10-04:00

MG's Hardware Probing Guide Hardware probing on the Apple II is somewhat hard because there is no guarantee that expansion card designers have put ROM in the space where ROM normally exists ($CsXX). In fact, some cards (Microsoft Softcard & compatibles, Mockingboard & compatibles) put I/O or I/O-like behavior into the $CsXX space.

Workstation Card Tech Notes - WS card FIConvertTime bug

M.G. — 2021-07-31T19:00:02-04:00

Workstation Card Tech Notes Firmware Identification The Worktation card is identified by the low-ASCII letters ATLK at $CnF9. Immediately following is type ID which is as follows: Type Firmware $00 Apple IIgs $01 Apple //e Workstation Card

Miscellaneous Projects, Demos, and Tests - SWU 2.0

M.G. — 2021-02-09T14:39:51-04:00

Miscellaneous Projects, Demos, and Tests OF816 for Apple IIgs This is a cross-platform Forth interpreter (it also runs on the W65C816SXB, but we won't worry about that for now). It's a ProDOS SYS file but requires an Apple IIgs. It does not need GS/

projects:swu2.0.po - created

M.G. — 2021-02-09T14:39:10-04:00

Interesting Items - [Wozboot 13]

M.G. — 2020-10-31T00:50:49-04:00

Interesting Items Wozboot 13 This [disk image] (Woz and a2r format) contains a “DOS 3.2 System Master” dated 3/21/1990. The most interesting thing on here is an Integer Basic program called “WOZBOOT 13” that claims to have been written by Woz himself. The program takes a 13-sector disk and makes it bootable on 13- (5:3) or 16-sector (6:2) machines by relocating data away from a 5:3 sector in track 0 and replacing the sector with a 6:2 sector 0 with boot code to load the original 5:3 sector 0…

wozboot_13.zip - created

M.G. — 2020-10-30T22:04:40-04:00

romex.zip - created

M.G. — 2020-06-10T22:19:30-04:00

LC //e Card - Problematic Software - [Software That Uses the Floating Bus]

M.G. — 2019-10-14T03:59:38-04:00

LC //e Card - Problematic Software Nearly all software that crashes on the Apple //e Card for Macintosh LC is likely because of accesses to $C029. This location is the NEWVIDEO register on the Apple IIgs which is used for, among other things, turning on and off super hi-res graphics modes.

projects:forth-5ce84572.po - created

M.G. — 2019-05-24T15:28:32-04:00

projects:forth-5ce83a9b.po - created

M.G. — 2019-05-24T14:46:49-04:00

projects:forth.po - created

M.G. — 2019-05-23T20:01:11-04:00

double_exposure_gs925.pdf - created

M.G. — 2018-11-21T12:04:59-04:00

projects:prodos16_image.203.mgfizzy.bridgefix.gz - created

M.G. — 2018-06-18T19:58:34-04:00

articles:iicplus_smartport.jpg - created

M.G. — 2018-06-12T16:34:22-04:00

projects:ehbasic.shk

M.G. — 2018-02-20T15:17:15-04:00

projects:ehbasic.po.gz

M.G. — 2018-02-20T15:17:15-04:00