On Thu, Dec 5, 2019 at 6:49 PM Lamar Owen wrote:
> The 12/16B/6000 mainboard's PAL equations are printed in the service
> manuals for those machines;
Some are, some aren't, and it's doesn't appear that they are 100% accurate,
though that might just be formatting errors in their reproduction of
On 2019-12-04 21:55, rescue wrote:
I have a TRS-80 Model III with a IV upgrade in it (non gate array).
I have a hunch that one or two of the HALs are bad (the primary one
being 8075208).
Anyone have the JED files to program any of these HALs into PALs or
GALs ?
Anyone know a source for
On 12/5/19 12:39 PM, Eric Smith via cctalk wrote:
Last year I read most of the PALs and HALs of a TRS-80 Model 16B main
board (same as Model 12 main board). I was surprised that none of the
PALs were protected, and even more surprised that some (but not all)
of the HALs could be read as PALs.
On Wed, Dec 4, 2019 at 11:08 PM rescue via cctalk
wrote:
> I have a TRS-80 Model III with a IV upgrade in it (non gate array).
> I have a hunch that one or two of the HALs are bad (the primary one
> Anyone know if these can be read, or if they are protected (for
> example, if I were able to
