I thought it was power supply problem, but i think can safely rule that out tried 3 different power supplys atx type (using ian steadmens atx adapter)and now just bought a brand new antec earthwatts 430 watts, just in case my old power supplys weren't pumping out enough 12volts but still same problem won't boot when connect blizzard to my amiga 1200 power tower.
I have some 4 meg simms tried managed to boot to workbench but then crashed. When rebooted software error.
I got ibm 64 mb simm (FRU 42L0255) with it. Using a1200 motherboard revision id1.
I plugged in power monitor to my ac outlet to see if the blizzard is drawing any power it seems to draw 4 watts surely it uses more than that?
looking for any suggestions?
Ok I have a dozen of these cards in various A1200s and I never have had a problem with power. In fact I started using the Blizzard as opposed to the Apollo for the stability it provided.
The card I believe should look like this... which is one of mine.
http://www.commodore-amiga-retro.com/amiga/car_0507/a_scuzz_retro_0507_102.jpgFirst up... do you see blue wavy lines across the screen when it tries to boot.
You can deactivate the card without taking it out of the machine by holding the keybutton number 2 on your keyboard. Not the Numpad but the main keyboard. This also kills the RAM and the SCSI Kit if you have it. Just do it as the computer boots.
MAPROM
If memory is installed on the Blizzard 1230-IV you can load Kickstart into the faster RAM to speed up the execution of the operating system functions. If the MAPROM jumper is removed, Kickstartwill be automatically copied over to the RAM. If the jumper is installed Kickstart will be executed on the ROM. Remapping the ROM-image to the FAST RAM will occupy 512K of your installed RAM.
RAMSPEED
The Blizzard's RAM access can be adapted to the type of memory used on the Blizzard 1230-IV by use of the RAMSPEED jumper. If only one module is used with access time of 60ns or better, the RAMSPEED Jumper can be set to improve RAM performance. If two modules are used ( only with the SCSI-Kit) or if the access time of the SIMMis 70ns the jumper has to be removed. Setting the jumper can improve RAM access up to 10% depending on the application used.
MEMORY CONFIGURATION
You will require a 32-bit SIMM for the memory. You can use both single-sided and double sided SIMMs. The Blizzard 1230-IV accepts SIMMs with a memory size of 1MB, 2MB, 4MB, 8MB, 16MB, 32MB, 64MB and 128MB. You can configure both 32-bit and 36-bit SIMMs.
The Blizzard 1230-IV with 50 MHz processor needs SIMMs with a speed grade of 70 ns or faster.
JUMPER
With the processesor below the jumpers and the battery to the right the one closest to the processor is the MAPROM. The one above it is the RAMSPEED.
Be very careful not to apply too much pressure to the board when installing. And make sure it is correctly pushed hard into position. I have had them work loose in a tower and failed to boot.
Hope that helps. Sadly, if the board is broken nothing will help here.
