?
Solved

IIsi and AppleColor problem

Posted on 1998-08-17
2
Medium Priority
?
320 Views
Last Modified: 2013-11-17
I have bought a 2nd hand IIsi with 5MB RAM and the AppleColor 14" display. It runs system 7 and it looks OK for 16 colors. When I switch to 256 colors, all the colors change (it definitely doesn't look right). The memory allowance for the screen is for 256 colors. I don't think there is a memory problem. Am I lacking an extension for the monitor? Any suggestions would be valuable.

Thanks
0
Comment
Question by:paris
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 

Expert Comment

by:cg906903
ID: 1536068
You shouldn't need an extension with a iisi and a apple color 14' Has somebody messed about with the gamma settings (hold down the option (alt) key and select option in the monitor cp)

I think the IIsi (alng with the IIci) uses the standard Ram as video ram. Rather than seperate video ram as in later machines.

If you have a 5 M machine that is 1M soldered and 4x1MB expansion, isn't it?

After the system software has grabbed what it wants there may not be enough for display ram. I have seen problems with dicky VRAM on LC series machines that was cleared up but replacing one of the VRAM chips but this wont help you.

Here is a excerpt from a Tech Note

The 24-bit memory map on the Macintosh IIsi is the same as for all other Mac II systems. It allocates 8 MB for RAM, 1 MB for ROM, 1 MB for I/O and 6 MB for expansion slots. However, because of the slot table, the on-board video takes up 2 slots rather than 1, which results in 2 MB allocated for on-board video. That means there is 16MB -1MB (I/O) - 1MB (ROM) - 2MB (on-board video) =12 MB maximum RAM available.


0
 
LVL 6

Accepted Solution

by:
TheHub earned 100 total points
ID: 1536069
I would recommend a Low Level format and a custom MacOS install for any Macontosh. That will give you the extension called:
IIci/IIsi Monitors Extension
and assemble the files System and Finder correctly.

-good luck
0

Featured Post

Optimum High-Definition Video Viewing and Control

The ATEN VM0404HA 4x4 4K HDMI Matrix Switch supports 4K resolutions of UHD (3840 x 2160) and DCI (4096 x 2160) with refresh rates of 30 Hz (4:4:4) and 60 Hz (4:2:0). It is ideal for applications where the routing of 4K digital signals is required.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes in detail how to set up the iPad in the Enterprise using iPCU aka iPhone Configuration Utility.  This could also be used for the iPhone although I have not detailed out any differences. Preparation as an iPad Administrator:…
Set up iPhone and iPad email signatures to always send in high-quality HTML with this step-by step guide.
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question