Timeline for How long are interrupt requests remembered on the Amstrad CPC?
Current License: CC BY-SA 4.0
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| May 25, 2021 at 14:26 | history | edited | Toby Speight | CC BY-SA 4.0 |
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| May 25, 2021 at 14:06 | history | edited | Raffzahn | CC BY-SA 4.0 |
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| May 24, 2021 at 21:05 | history | edited | Toby Speight | CC BY-SA 4.0 |
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| May 24, 2021 at 19:53 | comment | added | Raffzahn | @lvd Erm, there will always be that one different design ... just, why do I have the feeling that the name Sinclair more often creeps up than any other names? (A bit) More serious, AFAIR, the INT signal is held down for 32 clock cycles. that's way longer than any Z80 instruction, so technically it is held down until acknowledged - as withing 32 clocks the Z80 (in a basic Spectrum) will always have issued an ACK, wouldn't it? | |
| May 24, 2021 at 19:08 | comment | added | lvd | "any circuit design should hold it low at least until acknowledged or better until service started" -- then ZX Spectrum is definitely NOT an ANY circuit. :) It has fixed INT pulse length. | |
| May 24, 2021 at 15:51 | history | edited | Raffzahn | CC BY-SA 4.0 |
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| May 24, 2021 at 15:19 | history | edited | Raffzahn | CC BY-SA 4.0 |
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| May 24, 2021 at 14:34 | history | answered | Raffzahn | CC BY-SA 4.0 |