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- FILE CONTENTS
-
- This file contains important information on running GEOS with A64.
- Before attempting to run GEOS we recommend that you read this file.
-
-
- GEOS COMPATIBILITY
-
- A64 V3.0 supports GEOS V1.2, GEOS V1.3 and GEOS V2.0.
-
- All versions of GEOS use a built in fast loader that is extremely
- time critical and very difficult to emulate. Due to the extreme
- time critical nature of the GEOS fast loaders, GEOS will not work
- with all Amiga models or with all machine configurations.
-
- GEOS is supported on the following un-accelerated Amiga models:
- A500, A600, A1000, A1500 and A2000.
-
- GEOS will not work with the A1200, A2500, A3000 and A4000.
-
- GEOS will only work with 1541 or 1571 disk drives. 1581's and
- clones are not supported.
-
- We are working on GEOS support for all Amiga models and if possible
- we will make Patch Files available for the currently unsupported
- machines.
-
-
- GEOS CONFIG FILES
-
- For each version of GEOS there is a Config File set up specifically
- for running that version. You should use one of these Config Files
- whenever running GEOS.
-
- The settings that are different from A64's default settings are
- listed below:
-
- System Menu:
- o Game Ports: Swap Ports is Enabled and Port 1 is set to Joystick.
- This will allow you to use either a joystick or the Commodore
- 1350 mouse with GEOS.
- o SuperState is On: You can not access Amiga disk drives and
- printers while running GEOS and the easiest way to disable Amiga
- devices is to run A64 is SuperState mode (this also gives GEOS
- a small speed increase).
- o For GEOS V1.3 and 2.0 RAM Expansion is enabled and set to 512k.
- GEOS V1.2 does not support RAM Expansion, so for this version
- the REU is left disabled. Leaving the REU enabled will greatly
- improve GEOS' performance and we strongly recommend that you
- leave the REU enabled. If you have less than 2mb of RAM in your
- Amiga you may have to select a smaller REU size. We recommend
- using 512k.
-
- Graphics Menu:
- o Screen Refresh: Screen Data and Hardware Refresh Rates are both
- set to 3 times per second.
- o Sprites: Sprite Data Refresh Rate is set to 3 times per second
- and Sprite Collisions are disabled.
-
- NOTE: To gain an additional increase in speed you can set Colors to
- 2 in the A64 Colors screen. If you are using GEOS' default
- colors you will not notice any difference in the appearance of
- the screen while using only two colors, unless, of course, you
- are using geoPaint, in which case you will want to leave the
- Colors setting at 16 or 20.
-
- Code Menu:
- o AutoLoad is enabled for a Patch File.
- o The Patch File name is set to the correct version of GEOS and
- this file will be loaded whenever the Config File is loaded.
- o The Code File and Map File names are initialized for a Converted
- version of GEOS (see below for information on using these
- settings).
- o Don't Reset is enabled. If you plan on Converting GEOS (which
- is highly recommended) you must leave this option enabled. It
- will keep A64 from resetting when you load a Code or Map file.
- If you don't enable this option GEOS' fast loader will not work
- after loading one of these files.
-
-
- GEOS PATCH FILES
-
- For each version of GEOS there is Patch File that handles GEOS'
- built in fast loader. These Patch Files must be used in order to
- run GEOS and if you use the supplied Config Files for running GEOS
- the Patch Files will be handled automatically for you.
-
-
- RECOMMENDED SETTINGS WITHIN GEOS
-
- To get the best possible performance out of GEOS there are a couple
- of settings that you should set from within GEOS:
-
- o All mouse acceleration values should be set to their maximum
- (ie. fastest) settings.
- o REU should be enabled. We have found that enabling a Shadow
- Drive and enabling DMA for Move Data provided the best results.
-
-
- RUNNING GEOS FOR THE 1ST TIME
-
- 1. Run A64 by double-clicking on the Config File icon for the
- version of GEOS that you will be using.
- 2. Once A64 is running, load GEOS by typing: LOAD"*",8,1 [RETURN]
- You will then see the familiar "BOOTING GEOS ..." screen.
- 3. After a brief period of loading, A64 will Pause and you will be
- in A64 Prefs. Whenever you run GEOS, A64 will Pause during the
- booting process. This pause is explained further in this file.
- To continue loading GEOS select Exit in the A64 menu.
-
-
- CONVERTING GEOS
-
- GEOS is a very complex C64 program and it will severely tax A64's
- speed. To get the best possible performance while running GEOS we
- strongly recommend that you create a Code File for it. The
- following example shows you step-by-step how to "Convert" GEOS.
-
- The following example is simple enough that most users should be
- able to follow it without referring to the manual. However, it will
- help you to better understand the how and why of creating Code Files
- if you read the following sections of A64's manual before following
- this example:
-
- o Chapter 4: Load Map and Save Map in the Code Menu section
- o Chapter 4: Load Code in the Code Menu section
- o Chapter 6: Convert
-
- The process of creating and using a Code File can be broken down
- into four distinct steps:
-
- 1. Running a C64 program with A64
- 2. Using A64 to save a Map File of the C64 program
- 3. Using Convert to creating a Code File from the Map File
- 4. Loading the resulting Code File with A64
-
- To run GEOS:
-
- 1. Run A64 by double-clicking on the Config File icon for the
- version of GEOS that you will be using.
- 2. Once A64 is running, load GEOS by typing: LOAD"*",8,1 [RETURN]
- You will then see the familiar "BOOTING GEOS ..." screen.
- 3. After a brief period of loading, A64 will Pause and you will be
- in A64 Prefs. This pause is explained further in this file.
-
- To save a Map File of GEOS:
-
- 1. Select SAVE MAP in the Code Menu. You will then be prompted with
- a file requester. Note that the filename of the Map File will be
- named appropriately for the version of GEOS that you are running.
- It will be named GEOSVx.x.map, where x.x is the version that you
- are working with (ie. GEOSV2.0.map). Select the OK gadget and
- A64 will save the Map File.
- 2. You should now quit A64 by selecting QUIT in the A64 Menu. If
- you have at least 2mb of RAM you do not need to quit A64 at this
- point, instead you can just move the A64 Prefs screen to the
- background by clicking on the screen depth gadget.
-
- NOTE: Before proceeding you should reset your C64 disk drive. Make
- sure that your GEOS disk is removed from the drive and then
- turn the drive off, wait a couple seconds, and then turn it on
- again. Resetting the drive after running any C64 program that
- uses copy protection or a fast loader (including GEOS) is very
- important. If you do not reset the drive A64 may fail to load
- the next program that you attempt to load.
-
- To Create a Code File for GEOS:
-
- 1. Run Convert by double-clicking on the Convert icon (Convert can
- be found on disk #2).
- 2. Once Convert is running, select LOAD MAP in the Convert Menu.
- You will be prompted with a file requester. For the drawer name
- enter the following: A64:TAP/GEOS [RETURN] Then select the Map
- File that you saved in A64 while running GEOS. It will be named
- GEOSVx.x.map, where x.x is the version that you are working with
- (ie. GEOSV2.0.map). Select the OK gadget and Convert will load
- the Map File.
- 3. Select OPTIMIZE in the Convert Menu. You will be prompted a
- number of times to remove delays in the GEOS Map File. Type [Y]
- for each time you are prompted.
- 4. You will then be prompted with a file requester to save the Map
- File with the optimizations that were done. Select the OK
- gadget.
- 5. Select LOAD ADDRESS FILE in the Addresses Menu. Again you will
- be prompted with a file requester. The correct filename will
- already be entered for you so you can just select the OK gadget
- to load the the Address File.
- 6. Select CONVERT in the Convert Menu. Convert will then create a
- Code File on disk #1 in the GEOS drawer.
- 7. Select Quit in the Convert Menu.
-
- NOTE: These steps for Converting a C64 program will be basically
- the same for all C64 programs. The only difference between
- Converting GEOS and other programs is that GEOS uses an
- Address File and most other programs do not need an Address
- File. To Convert a different C64 program you would just skip
- step 5 (LOAD ADDRESS FILE) in the above example.
-
- To Load The Code File with A64:
-
- 1. Run A64 by double-clicking on the Config File icon for the
- version of GEOS that you will be using.
- 2. Once A64 is running, load GEOS by typing: LOAD"*",8,1 [RETURN]
- You will then see the familiar "BOOTING GEOS ..." screen.
- 3. After a brief period of loading, A64 will Pause and you will be
- in A64 Prefs.
- 4. Select LOAD CODE in the Code Menu. You will be prompted with a
- file requester that already has the name of the GEOS Code File
- entered. Select the OK gadget and A64 will load the Code File.
- 5. After A64's loads the Code File, select Exit in the A64 Menu and
- GEOS will finish booting, and the Code File will be active.
-
- Now, whenever you want to run GEOS just repeat the last five steps.
- If you want to load GEOS while already running A64, you can
- substitute step #1, by selecting LOAD CONFIG in the A64 Menu and
- loading the correct Config File with the file requester.
-
-
- WHY GEOS IS PAUSED WHEN LOADING
-
- GEOS is a very complex program when compared to most other C64
- programs. GEOS uses its built in fast loader and RAM expansion
- support to constantly move information in and out of the C64's
- memory map. These features make GEOS a very difficult program to
- Convert reliably.
-
- GEOS is paused during the boot process, because this is the only
- "safe" time to save a Map File and to Load a Code File. If a
- Code File is created at any other point in GEOS, more likely than
- not, the Code File will fail to work correctly.
-
-
- ADDITIONAL NOTES
-
- o It is normal for the screen to occasionally flash during accesses
- of the disk drive. This is caused by the emulation of the GEOS
- fast loader.
-
- o It is normal for the C64 drive LED to not come on sometimes
- while booting GEOS. During normal loading and saving the drive
- LED will come on as expected.
-
- o At the time of this writing GEOS V1.3 and V2.0 reports a RAM
- Expansion size of 512k when A64 only has 256k enabled. We have
- not found GEOS to fail because of this error, but we are looking
- into it.
-
-
- COPYRIGHTS
-
- GEOS, deskTop, geoPaint, geoWrite and diskTurbo © Copyright
- Berkeley Softworks.
-
-