Template:Octal D: Difference between revisions

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(We now have an article about mask ROM)
(Per Bregalad: The other octal D latches don't have enough enable signals)
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In theory, it would be possible to implement the bank select register with a 74373/74374/74377/74573 octal D latch, allowing up to {{{1}}}, {{{whynot|but due to mask [[ROM]] cost in the NES era, no non-pirate NES cart used this much memory}}}.
In theory, it would be possible to implement the bank select register with a [[74377|74HC377]] octal D latch, allowing up to {{{1}}}, {{{whynot|but due to mask [[ROM]] cost in the NES era, no non-pirate NES cart used this much memory}}}.
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Revision as of 15:59, 27 November 2010

In theory, it would be possible to implement the bank select register with a 74HC377 octal D latch, allowing up to {{{1}}}, but due to mask ROM cost in the NES era, no non-pirate NES cart used this much memory.

About this template:

A lot of pages about 74HC161-based discrete logic mappers have similar wording.

Examples:

{{octal D|2 megabytes of PRG ROM}}

{{octal D|
512 KB of PRG ROM and 128 KB of PRG ROM|
whynot=but licensed games used an ASIC mapper instead for smaller banks}}