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Warp-SE
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Fixed doc bug

This commit is contained in:
Zane Kaminski 2021-11-01 15:54:41 -04:00
parent 6986fad3ae
commit e6e0c528f0
2 changed files with 8 additions and 4 deletions
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1
.gitignore vendored
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@ -27,3 +27,4 @@ fp-info-cache
*.csv
*.DS_Store
Docs/Thumbs.db

11
Docs/index.html
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@ -1,4 +1,4 @@
<html>
<html>
<head>
<title>Garrett's Workshop - Warp-SE Timing</title>
<style type="text/css">
@ -85,7 +85,7 @@ Primarily, /AS falls after a rising edge of the clock but rises after a falling
Since the worst-case clock-to-output delay of MC68000 is equal to half of one clock cycle, <br/>
attempting to detect bus activity by registering /AS strictly on the rising or falling edge
would result in entrance into a metastable state. <br/>
Therefore we introduce the "bus active" BACTV signal. BACT is the conjunction of the address strobe presently and as registered on the previous falling edge of the FSB clock. <br/>
Therefore we introduce the "bus active" BACT signal. BACT is the disjunction of the address strobe asynchronously and as registered on the previous falling edge of the FSB clock. <br/>
The key useful feature of the BACT signal is that it is always valid at the rising edge of FCLK.
</p>
@ -98,7 +98,10 @@ The key useful feature of the BACT signal is that it is always valid at the risi
{name: '/AS', wave: '1...x0........x1....x2.', phase:-0.25, period: 0.5},
{name: '/DTACK', wave: '1.......0...........1..', phase:-0.25, period: 0.5},
{name: 'BACT', wave: '0...x.1...........0.x.2', phase:-0.25, period: 0.5},
{name: 'Ready', wave: 'x12.x.', phase:-0.20, period: 2},
{name: 'Ready0', wave: 'x122x.', phase:-0.20, period: 2},
{name: 'Ready1', wave: 'x122x.', phase:-0.20, period: 2},
{name: 'Ready2', wave: 'x122x.', phase:-0.20, period: 2},
{name: 'Ready', wave: 'x122x.', phase:-0.20, period: 2},
]}
</script><br/><p>
Given BACT, the FSB controller asserts either /DTACK or /VPA when BACT is true and removes both /DTACK and /VPA when BACT is false. <br/>
@ -154,7 +157,7 @@ so /VPA is additionally gated by /AS, whereas /DTACK is not.
<script type="WaveDrom">{signal: [
{name: 'MCLK', wave: 'p.........', phase: 0.00, period: 2},
{name: 'A', wave: 'x2..x2..x.', phase: 0.25, period: 2, data:['400000-4FFFFF','400000-4FFFFF']},
{name: 'ROMCS', wave: '1..x.0.........x.....0.........x.1.....', phase:-0.25, period: 0.5},
{name: 'ROMCS', wave: '1..x0..........x....0..........x1......', phase:-0.25, period: 0.5},
{name: 'RW', wave: 'x..2....x..2....x...', phase: 0.25, period: 1},
{name: 'AS', wave: '1...x0........x1....x0........x1....x2.', phase:-0.25, period: 0.5},
{name: 'DS (RD)', wave: '1...x0........x1....x0........x1.......', phase:-0.25, period: 0.5},