PIC micro. Can't remember the family.
Discussion
This is a peripherial microcontroller. Originally manufactured by Microchip Technology.
Specialized device like AMD or Nvidia GPU-s
This was the 90s, that was the main processor 😆
Yes, but we didn't use them as I remember. When I began developing the most modern microchip CPU was the Z80, but the IBM PC/XT contained Intel 8086.
Originally I learned on DEC PDP11/45 (and clones like CM4, TPA11) and on a Polish ODRA1204.