pjh
Experienced Member
I bought a partially populated Morrow DJ-DMA board on Ebay recently. It appears
that the previous owner bought it as a bare-board but never finished it. I
downloaded the "DJ-DMA Technical Manual Rev 1" and looked over it. I noticed that
the parts list in the manual shows 1 PAL, 1 FPLA, and 5 PROMs without identifying
which socket each belongs to on the board. I found a component silkscreen at
another website and matched these with the schematics at the back of the manual.
Location 16A - is a 2716/32
Location 2B - is a 16R8
Location 12B - is a 6301
Location 2C - is a 82S105
Location 4C - is a 9401
Location 11C - is a 6305
Location 3D - is a 6306
Morrow, having sold this as a bare-board, must have offered, at one time, these chips
as an optional set that could be bought with the board or bought at a later time.
I assume of course that the 2716/32 contains bootstrap code.
My questions are:
Are there any resources for these chips programmed for the Morrow DJ-DMA?
If not, does anyone have a list of the contents of these chips?
Thanks.
that the previous owner bought it as a bare-board but never finished it. I
downloaded the "DJ-DMA Technical Manual Rev 1" and looked over it. I noticed that
the parts list in the manual shows 1 PAL, 1 FPLA, and 5 PROMs without identifying
which socket each belongs to on the board. I found a component silkscreen at
another website and matched these with the schematics at the back of the manual.
Location 16A - is a 2716/32
Location 2B - is a 16R8
Location 12B - is a 6301
Location 2C - is a 82S105
Location 4C - is a 9401
Location 11C - is a 6305
Location 3D - is a 6306
Morrow, having sold this as a bare-board, must have offered, at one time, these chips
as an optional set that could be bought with the board or bought at a later time.
I assume of course that the 2716/32 contains bootstrap code.
My questions are:
Are there any resources for these chips programmed for the Morrow DJ-DMA?
If not, does anyone have a list of the contents of these chips?
Thanks.