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GeneralRe: I just noticed I missed my CP birthday! Pin
Daniel Pfeffer20-Apr-18 6:28
professionalDaniel Pfeffer20-Apr-18 6:28 
GeneralThought of the Day Pin
OriginalGriff19-Apr-18 6:17
mveOriginalGriff19-Apr-18 6:17 
GeneralRe: Thought of the Day Pin
lopatir19-Apr-18 6:23
Memberlopatir19-Apr-18 6:23 
GeneralRe: Thought of the Day Pin
W Balboos, GHB19-Apr-18 6:31
mveW Balboos, GHB19-Apr-18 6:31 
GeneralArgh! Interrupt problems! Pin
CodeWraith19-Apr-18 6:15
MemberCodeWraith19-Apr-18 6:15 
GeneralRe: Argh! Interrupt problems! Pin
OriginalGriff19-Apr-18 6:22
mveOriginalGriff19-Apr-18 6:22 
GeneralRe: Argh! Interrupt problems! Pin
CodeWraith19-Apr-18 6:31
MemberCodeWraith19-Apr-18 6:31 
GeneralRe: Argh! Interrupt problems! Pin
lopatir19-Apr-18 6:42
Memberlopatir19-Apr-18 6:42 
I was thinking the same as OG, 16 IRQ's needs only 4 bits (so the byte could handle up to 256 IRQ's - enough for the future.)

Could be wrong but back in the day I sort of remember when the Z80 caught an IRQ it disabled further interrupts till you executed a particular instruction (or was it a special variant of the RET instruction?) - something like that? (And there may have been 1 or 2 specific IRQs that weren't disabled). Was a loooong time ago, could be wrong, may have been a dream.

Perhaps your CPU has something similar?
Signature ready for installation. Please Reboot now.

GeneralRe: Argh! Interrupt problems! Pin
OriginalGriff19-Apr-18 6:49
mveOriginalGriff19-Apr-18 6:49 
GeneralRe: Argh! Interrupt problems! Pin
Marc Clifton19-Apr-18 7:32
mvaMarc Clifton19-Apr-18 7:32 
GeneralRe: Argh! Interrupt problems! Pin
CodeWraith19-Apr-18 8:03
MemberCodeWraith19-Apr-18 8:03 
GeneralRe: Argh! Interrupt problems! Pin
Marc Clifton20-Apr-18 3:52
mvaMarc Clifton20-Apr-18 3:52 
GeneralRe: Argh! Interrupt problems! Pin
Slacker00719-Apr-18 6:36
professionalSlacker00719-Apr-18 6:36 
GeneralRe: Argh! Interrupt problems! Pin
OriginalGriff19-Apr-18 6:50
mveOriginalGriff19-Apr-18 6:50 
GeneralRe: Argh! Interrupt problems! Pin
Slacker00719-Apr-18 7:07
professionalSlacker00719-Apr-18 7:07 
GeneralRe: Argh! Interrupt problems! Pin
lopatir19-Apr-18 7:17
Memberlopatir19-Apr-18 7:17 
GeneralRe: Argh! Interrupt problems! Pin
OriginalGriff19-Apr-18 7:21
mveOriginalGriff19-Apr-18 7:21 
GeneralRe: Argh! Interrupt problems! Pin
lopatir19-Apr-18 7:36
Memberlopatir19-Apr-18 7:36 
GeneralRe: Argh! Interrupt problems! Pin
OriginalGriff19-Apr-18 9:27
mveOriginalGriff19-Apr-18 9:27 
GeneralRe: Argh! Interrupt problems! Pin
CodeWraith19-Apr-18 8:13
MemberCodeWraith19-Apr-18 8:13 
GeneralRe: Argh! Interrupt problems! Pin
Marc Clifton19-Apr-18 7:23
mvaMarc Clifton19-Apr-18 7:23 
GeneralRe: Argh! Interrupt problems! Pin
OriginalGriff19-Apr-18 7:27
mveOriginalGriff19-Apr-18 7:27 
GeneralAPOD Pin
R. Giskard Reventlov19-Apr-18 5:27
MemberR. Giskard Reventlov19-Apr-18 5:27 
GeneralRe: APOD Pin
glennPattonInThePub319-Apr-18 5:45
professionalglennPattonInThePub319-Apr-18 5:45 
GeneralRe: APOD Pin
lopatir19-Apr-18 6:03
Memberlopatir19-Apr-18 6:03 

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