5 Dec
2019
5 Dec
'19
9:39 a.m.
On Wed, Dec 4, 2019 at 11:08 PM rescue via cctalk <cctalk at classiccmp.org>
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 borrow some working ones, could they be
duplicated ?) ?
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.