Talk:Contended memory

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Computing

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"Snow bug"

Latest comment: 8 years ago1 comment1 person in discussion

This section should be rewritten. The snow effect wasn't wasn't anything to do with changing the value of the refresh register. It happens when you set the interrupt register to point to an interrupt vector table in contended RAM memory (16K-32K on the Spectrum), i.e. load I with values between 0x40 and 0x7F.

See https://faqwiki.zxnet.co.uk/wiki/ZX_Spectrum_ULA#The_Snow_Effect and http://www.zxdesign.info/harlequinSnow.shtml . — Preceding unsigned comment added by 188.79.53.149 (talk) 10:32, 1 July 2018 (UTC)Reply

This page was redesigned at the edge.

"Snow bug"