122:4f335343eec7
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2020-04-15 |
Paul Boddie |
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Added clarifications about the use of 8MHz cycles with an 8-bit memory channel.
In particular, 16MHz is still required for the pixel clock in MODE 0. |
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Electron.txt ULA.txt
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121:8b00fd59f03a
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2020-04-13 |
Paul Boddie |
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Added notes on 4164 RAM costs referencing historical remarks. |
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Electron.txt ULA.txt
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120:b3383787c26f
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2020-04-12 |
Paul Boddie |
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Added more remarks, particularly regarding direct CPU access to RAM. |
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Electron.txt ULA.txt
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119:2baff40d749c
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2020-04-07 |
Paul Boddie |
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Added remarks on 8-bit wide RAM access and possible 8MHz ULA frequency. |
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Electron.txt ULA.txt
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118:7bef8e6b48a1
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2020-04-07 |
Paul Boddie |
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Added some memory bandwidth and architecture notes. |
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Electron.txt ULA.txt
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117:f1ad140b086b
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2019-11-26 |
Paul Boddie |
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Added a note about keyboard access timings. |
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ULA.txt
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116:69f0c87496c6
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2019-04-09 |
Paul Boddie |
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Added some notes about RAM access and the limitations applying to the CPU. |
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ULA.txt
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115:46bcedba4e27
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2019-02-24 |
Paul Boddie |
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Made clarification about 1MHz RAM access, added 2MHz bandwidth figure.
Fixed service manual link. |
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ULA.txt
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114:bb63d97d265e
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2019-02-22 |
Paul Boddie |
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Added some notes about video expansions and ULA simplification. |
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Electron.txt
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113:d4fc92a0628e
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2017-04-12 |
Paul Boddie |
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Noted that the ULA could re-read the character values and just increment an
index into the character bitmap data, moving to the next set of values when
changing character lines, rather than having to cache the character values. |
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ULA.txt
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