63:85305c169370
52:096262322f96
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2017-11-06 |
Paul Boddie |
changeset
files
shortlog
graph
|
Test usage of Timer3 to initiate the reset channel cell transfer. |
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vga.S
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62:f1590f2ea5cb
53:9b3b13a62733
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2017-11-06 |
Paul Boddie |
changeset
files
shortlog
graph
|
Test usage of Timer3 to initiate the reset channel cell transfer. |
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vga.S
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61:045ed8ec2160
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2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
A tentative sketch of how OC3 might drive line DMA transfers and the clock pulse
of a flip-flop. This does not work, perhaps because the OC3 events might not be
causing the DMA transfers. However, if OC3 interrupts are enabled they will most
likely cause interruptions that are too frequent and yet cannot be serviced
frequently enough for the DMA transfers to occur at the appropriate rate. |
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README.txt pic32.h vga.S vga.h
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60:ae02a1821af3
61:045ed8ec2160 73:83ebe9cd0314
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Make DMA channel 1 the line channel. Things will only now work if the Timer2
interrupt is not disabled, for some reason. |
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vga.S
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59:5d02b5c6d920
60:ae02a1821af3 64:0f2d331ec834
53:9b3b13a62733
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Test chaining of DMA channels, adding one between the line and reset channels. |
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vga.S
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58:060829d0ff7d
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Make DMA channel 1 the line channel. Things will only now work if the Timer2
interrupt is not disabled, for some reason. |
CLKO-to-74HC273-CP |
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vga.S
|
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57:80c792d32e5e
55:426ff3c6a4da
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Test chaining of DMA channels, adding one between the line and reset channels. |
CLKO-to-74HC273-CP |
|
vga.S
|
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56:949e2005de1c
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Simplify REFCLKO initialisation and set RODIV to 2 to test pixel uniformity. |
CLKO-to-74HC273-CP |
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vga.S
|
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55:426ff3c6a4da
56:949e2005de1c 57:80c792d32e5e
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Switch to REFCLKO instead of using CLKO and the primary oscillator. |
CLKO-to-74HC273-CP |
|
README.txt vga.S
|
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54:d782a0c62e19
|
2017-11-04 |
Paul Boddie |
changeset
files
shortlog
graph
|
Experiment with the use of CLKO providing the clock pulse of a flip-flop
attempting to buffer the output. |
CLKO-to-74HC273-CP |
|
README.txt vga.S
|
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