changed mind: TOS in memory

i don't actually think this matters, especially on this hardware.
plus it complicates implementation.

1 files changed, 1 insertions, 5 deletions

diff --git a/readme.md b/readme.md
index a4d38f3..abeafe8 100644
--- a/readme.md
+++ b/readme.md
@@ -29,13 +29,9 @@ there are a set of 'virtual registers' (see moving forth part 1)
 - W, the working register, is r11.
 - X, the secondary working register, is r12.
 - IP, the instruction pointer, is r13. (this will only be needed if we switch to DTC, otherwise this can be Y, a third general purpose register)
-- NOS, the next-on-stack pointer, is r14.
-- TOS, the top of the stack, is r15.
+- SP, the working stack pointer, is r14.
 - RSP, the return stack pointer, is rsp.
 
-on NOS (r14): TOS is kept in a register,
-NOS points to the *second* item in the stack.
-
 ## miscellaneous notes and stuff
 
 ### COMPILE,