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boards:sbc:sbc_v2:minimum-build [2019/04/13 23:37] b1ackmai1er [Use flash memory instead of UV-erasable EPROM] |
boards:sbc:sbc_v2:minimum-build [2019/06/10 11:10] (current) b1ackmai1er [Use flash memory instead of UV-erasable EPROM] |
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| ^AM29F040B^512Kb|1-2|2-3|2-3| | ^AM29F040B^512Kb|1-2|2-3|2-3| | ||
| ^AT49F040A^512Kb|1-2|2-3|2-3| | ^AT49F040A^512Kb|1-2|2-3|2-3| | ||
| + | ^SST39SF040^512Kb|1-2|2-3|2-3| | ||
| ^M27C4001^512Kb|1-2|1-2|None| | ^M27C4001^512Kb|1-2|1-2|None| | ||
| ^AT27C080^1Mb|1-2|1-2|1-2| | ^AT27C080^1Mb|1-2|1-2|1-2| | ||
| ^M27C801^1Mb|1-2|1-2|1-2| | ^M27C801^1Mb|1-2|1-2|1-2| | ||
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| + | In the situation that you do not have an EPROM programmer it is best to obtain a copy of the ROMWBW in a FLASH format so it can be reprogrammed in-system using the FLASH utility. A HOTFLASH technique can be used if you want to swap from an EPROM to a FLASH chip without an EPROM programmer: | ||
| + | |||
| + | Example starting with an AT27C080 EPROM and swapping to a AT49F040A FLASH chip. | ||
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| + | - Transfer new ROM image from PC to SBC-V2 secondary storage i.e. SDCard | ||
| + | - Copy FLASH.COM from B: to secondary storage i.e SDCard | ||
| + | - Change to secondary storage directory. | ||
| + | - Remove EPROM | ||
| + | - Change jumpers to suit FLASH chip i.e. K1 unchanged, K6 from 1-2 to 2-3, K8 from 1-2 to 2-3. | ||
| + | - Insert FLASH chip. Insert pin 1 side first to ensure GND had contact first. | ||
| + | - Run FLASH.COM i.e. FLASH /WRITE SBC.ROM | ||
| + | - Reboot | ||
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