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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112:e0f6fdfe1e6d
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2017-04-11 |
Paul Boddie |
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Added notes about text-only modes, plus character and attribute value retrieval
and caching. |
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ULA.txt
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111:723b5ffe7caa
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2017-03-31 |
Paul Boddie |
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Added CPU clock input and output notes. |
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ULA.txt
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110:d998a098edb6
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2016-11-14 |
Paul Boddie |
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Added a note about the CPU clock phases. |
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ULA.txt
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109:65b890e3e7f6
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2016-09-04 |
Paul Boddie |
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Added explicit reason for 2MHz RAM access not being feasible. |
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ULA.txt
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108:19850e9d0183
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2016-06-23 |
Paul Boddie |
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Introduced explicit next_frame calls after updating the screen start address. |
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main.py
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