10 July 2014, 10:00 | #1 |
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Blizzard 12x0 accelerator board ROM chip image
Does anyone have physical ROM chip (27C256) dumps from Blizzard 12x0 boards? (Chip is not socketed, unfortunately)
There are some images floating around but they appear to be software created dumps. Most of them have same data repeating twice (or even more) and none of them have both early boot rom code (flashing colors + "2" key disable check) and RAM autoconfig data and code. Both of them have to be in same ROM chip in my opinion. I am planning to make simple Blizzard "emulation", Blizzard-like RAM config and maprom hardware only, should be really easy to do and I am not going to support fake boot ROMs |
10 July 2014, 21:59 | #2 |
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10 July 2014, 22:07 | #3 |
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Thanks!
Looks good. "early ROM" is interleaved with "autoconfig ROM". Even bytes are "early", odd bytes are "autoconfig". 1230-IV ROM still needed. (Probably very similar) |
11 July 2014, 07:58 | #4 |
A-Collector, repairments
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http://chain.3dgrafika.cz/amiga/EPROMky/Blizzard/
thats all what ive got |
11 July 2014, 08:59 | #5 |
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A1234 is scsi kit rom (which is socketed and easily found) and 1240 seems to be exact same as in previous url, different name only.
I think I'll just assume that 1230-IV uses same interleave method and create interleaved version from already existing separate 1230 boot and autoconfig rom images. Until confirmed dumped version appears. |
11 July 2014, 09:31 | #6 |
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http://amigaga.chez-alice.fr/classic/bin/index.htm
http://amigaromarchives.limewebs.com/ Maybe it can help... I can unsolder and dump any 27c256 eprom but don't want to do it on a working Blizzard With any Dead Blizzard 12x0, no prob... What do you need exactly Toni ? |
11 July 2014, 11:15 | #7 |
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Thanks. "Phase5 Blizzard 1230 IV Eprom autoboot (1.0)" looks correct, it also matches my self-made interleaved version 100%.
Currently I am only interested in 1230 IV and 1240/1260 because they are most popular and I know how memory mapping and map rom hardware works. Perhaps also 2040/2060 but I am not sure if is too different. (In hardware level, not including CPU, 1230 and 1240/1260 are very similar) |
11 July 2014, 12:20 | #8 |
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Does this mean we will get an "Accelerator" option under "Expansions"? Along with correct frequencies and stuff?
Since you also do emulate some SCSI interfaces for Amiga, this means we might someday see also "Blizzard SCSI kit" support? |
11 July 2014, 12:30 | #9 | ||
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Quote:
Second question: NO. ERROR: Wrong question error. Quote:
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11 July 2014, 12:40 | #10 | |
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Quote:
So you will just be able to select the bootROM and that's it - I guess it should be enough to fool most programs in recognizing a Blizzard as present, right? Yeah, makes sense. I wonder if some other emulator/virtual machine emulates the 53C94? In that case you could pull the code from there, if the license is compatible. Anyhow, prepare yourself for the "Can you please emulate the BlizzardPPC" requests which will come after you add the Blizzard ROMs to WinUAE |
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11 July 2014, 12:49 | #11 | |||
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Quote:
Quote:
Quote:
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11 July 2014, 14:26 | #12 |
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11 July 2014, 14:52 | #13 |
Supernormal
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Isn't there a ppc emulator for x86?
I know you can do it. :P (Let's see how prepared you are) Joking aside, don't do it before telling us so that we can sell our ppc cards while they are still between €900 & €1500. :P |
11 July 2014, 21:06 | #14 |
A-Collector, repairments
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http://chain.3dgrafika.cz/amiga/EPRO...1240_eprom.zip should be eprom readed from dead 1240>1260 board, but my memory here is really fuzzy .)
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11 July 2014, 23:16 | #15 |
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I miss a lot the B1260 that I had to sold to buy a BPPC. I will love to see again the typical booting rainbow screen of the B1260 when booting WinUAE.
You are |
11 July 2014, 23:18 | #16 |
Supernormal
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I have both a BPPC (not working for a very long time at the moment) and a 1260. What makes you miss the 1260? Is it really just the rainbow? :P
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11 July 2014, 23:24 | #17 |
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12 July 2014, 15:13 | #18 | |
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About Blizzard 2060: Could someone attach tools/showconfig output? (It must have at least same RAM installed). I'd like to find out RAM base address. It may be $80000000 (at least it does first check using this address but it also checks other addresses)
This probably won't be fully emulated because scsi part is not optional. (and scsi chip is again different..) (I already have 2060 flash dumps) And just for completeness: Does Blizzard 1240 rom exist that does not have 68060 support or was it originally designed to handle both CPUs? (Any accelerator that supports 68060 has to disable FPU in early boot or early KS FPU detection will crash. 68060 has longer null/idle frame than any other FPU type.) Above roms have this text: Code:
0F00000 1111 6000 0088 3638 3036 3020 424F 4F54 ..`...68060 BOOT 0F00010 5354 5241 5020 5631 2E32 2028 6329 2070 STRAP V1.2 (c) p 0F00020 6861 7365 2035 2064 6967 6974 616C 2070 hase 5 digital p 0F00030 726F 6475 6374 7320 3139 3933 2D31 3939 roducts 1993-199 0F00040 350A 0D42 6C69 7A7A 6172 6420 3132 3630 5..Blizzard 1260 0F00050 2F31 3234 3020 426F 6F74 7374 7261 7020 /1240 Bootstrap 0F00060 5620 312E 3020 2863 2920 7068 6173 6520 V 1.0 (c) phase 0F00070 3520 6469 6769 7461 6C20 7072 6F64 7563 5 digital produc 0F00080 7473 2031 3939 350A 0D00 0000 287C 0001 ts 1995.....(|.. Quote:
Any fast emulated CPU mode: flicker takes less than single frame.. (fast modes don't support memory access delays) btw, for some reason Blizzard 1230 IV blue flicker is CIA timed. |
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23 July 2014, 12:39 | #19 |
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About Cyberstorm MK3/CSPPC: official flash update files seem to be scrambled or encrypted, does anyone have "clean" version or do I have to emulate flash chip first and run the flasher inside emulation to get full raw image?
EDIT: I wrote flash chip emulator, run the flash updater and got the unscrambled images from both csmk3 and csppc flash update files. Easier than reverse-engineering the flash updater Last edited by Toni Wilen; 23 July 2014 at 15:43. |
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