GSPlus Emulator help for Apple II

mloret

New Tinkerer
Jul 21, 2022
79
22
8
Hey guys. I'm new to Apple II and I'm working on GSPlus to emulate. Unfortunately, I can't seem to get it to load software for an Apple II. I tried to boot from slots 5, 6, and 7 and nothing. I get code and it takes me to monitor. Any suggestions?
 

skate323k137

Tinkerer
Mar 7, 2022
130
103
43
I saw your posting on AppleFritter, but I will echo my reply here, and hopefully someone else knows a better or easier way (not that this is bad at all).

Use F4 to mount the disk image (sounds like you're doing this fine). The IIGS will only boot from the first disk in a slot, so S5D1 or S6D1 would work but S6D2 would not for example.

Restart the emulator, if it doesn't boot properly, most likely you will have a "*" prompt (monitor) or "]" prompt (basic).

If you are familiar with using PR#5 or PR#6 to boot a slot (from BASIC), that's really all you need to do. If you are at the monitor "*" prompt, type "E000R" to get to BASIC, and then PR#5 to boot Slot 5 disk 1. It should work for you.
 

skate323k137

Tinkerer
Mar 7, 2022
130
103
43
No worries. A very very condensed cliff notes is that the system monitor was Wozniak's original code to interact with the 6502 processor. On the Apple 1, from the Monitor, Basic was loaded from cassette tape and ended up in memory starting at the location E000. Later on, BASIC was added directly to ROM in the Apple II series. Either way, issuing the command "E000R" in the monitor just means start Running code from memory location E000.

You can also "escape" from BASIC back to the monitor by issuing the infamous "CALL -151" command.

System monitors for microprocessors are typically very small utilities which allow input or examination of compiled machine code. The Wozniak system monitor for the 6502 can fit in a short paragraph of text, it's that small. To the average user they are not too useful, so having BASIC available was one of the reasons the Apple computers did so well.
 
Last edited:

Patrick

Tinkerer
Oct 26, 2021
434
1
224
43
I used this book. which is new (compared to other apple ii books)

The New Apple II User's Guide

really helped me understand the different modes and how to boot things and stuff. even was great at talking about the different models of Apple II's
 
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