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22 votes

When did wear leveling in flash storage come up?

It's a long-standing and well understood design principle. The very first EEPROM I designed into a system in about 1989 had wear levelling implemented in the software. It was a simple conclusion that ...
TonyM's user avatar
  • 4,266
16 votes

When did wear leveling in flash storage come up?

It was certainly a known practice in 1993 when I designed a filesystem for EdenOs that had an optional wear-levelling layer for flash-based storage (battery-backed RAM on PCMCIA was the favourite ...
Frog's user avatar
  • 1,385
9 votes

When did wear leveling in flash storage come up?

Wear levelling is/was originally a feature of file systems. FLASH 'drives' were at first not made to emulate existing standards. In fact, they were not 'drives' at all but just the flash memory chips ...
Raffzahn's user avatar
  • 226k
7 votes

Which generations of PowerPC did Windows NT 4 run on?

In general, NT3.51 for PowerPC should run on all PReP machines (Specs) from IBM or Motorola (*1), as long as it features an ARC bootloader - that's why it won't come up on CHRP PowerPC Macs with Open ...
Raffzahn's user avatar
  • 226k
6 votes

When did wear leveling in flash storage come up?

While most flash memories use a different circuit topology from most EEPROMs (some devices using the EEPROM circuit topology are marketed as flash, and perhaps vice versa), many EEPROM memories have ...
supercat's user avatar
  • 37.3k
6 votes

When did wear leveling in flash storage come up?

Basic static wear leveling is ancient by technology standards. Simple implementations were used somewhat regularly with EEPROMs at least as early as the mid 1980's, and probably earlier even than that....
Austin Hemmelgarn's user avatar
4 votes
Accepted

Change text color in Z80 assembly for Amstrad CPC 464

Maybe start with the Text Output routines in the Amstrad firmware. See 'The Text VDU' section of http://www.cantrell.org.uk/david/tech/cpc/cpc-firmware/firmware.pdf for more details. TXT SET PEN will ...
Mark Williams's user avatar
2 votes

Change text color in Z80 assembly for Amstrad CPC 464

It's a simple solution, but the firmware information was not clear to me, just now I got it: org &4000 run &4000 ld a,2 ; Pen number 2 call &bb90 ; TXT SET PEN (light blue) ld A,65 ;...
reymagnus's user avatar
  • 173

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