Thread: FastRom2MB
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Old 11 June 2018, 17:00   #1
SpeedGeek
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Lightbulb FastRom2MB

FastRom2MB 1.1 for 68020/030 ©SpeedGeek 2018

INTRODUCTION:
FastRom2MB is an MMU tool which provides up to 2MB Kickstart ROM support to the AmigaOS "CPU" command. The CPU command already remaps the Standard 512KB ROM so this tool just remaps the Extended ROMs and MMU write protects the ROM images.

FEATURES:
- Remaps 512KB Extended ROM @ $E00000
- Remaps 1MB Extended ROM @ $A80000
- MMU write protects Standard and Extended ROMs
- Remaps only into available Fast RAM
- Uses ROM header detection code
- 100% assembler code

REQUIREMENTS:
- 68020 or 68030 CPU with MMU
- 1MB or 2MB Kickstart ROM installed (for remapping)
- AmigaOS CPU command (with FASTROM enabled)

NOTES:
There are only 3 Amiga models (A600, A1200 and CD32) which support 2MB of ROM. Please consider the ROM vs. Fast RAM speed before remapping. If you want to speed up copy operations see the CMQ&B.txt (included).

MMU write protection is over-rated! This tool will NOT prevent your system from crashing! But it will increase the chances of having a "Software Failure" which is useful for debugging purposes.

HISTORY:
v1.0 - First release
v1.1 - Merged FastRomWP code with existing 1MB and 2MB code so the 1MB and WP variants are now obsolete.
Attached Thumbnails
Click image for larger version

Name:	FASTROMBENCH.PNG
Views:	330
Size:	11.5 KB
ID:	61973   Click image for larger version

Name:	MMUX32.PNG
Views:	296
Size:	14.1 KB
ID:	61974  
Attached Files
File Type: lha FASTROM2MB11.LHA (2.8 KB, 139 views)
File Type: lha FASTROMBENCH11.LHA (2.4 KB, 78 views)

Last edited by SpeedGeek; 12 April 2022 at 13:18.
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